Perlの上にも三年〜ずっとイケてるサービスを作り続ける技術〜

by hitode909

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1FSMͷ্ʹ΋ࡾ೥ ͣͬͱΠέͯΔαʔϏεΛ ࡞Γଓ͚Δٕज़ IJUPEF

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ࢿྉ͖ͬ͞·Ͱ

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ຕ

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͕Μ͹Ζ͏

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͕Μ͹Ζ͏

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1FSMͷ্ʹ΋ࡾ೥ ͣͬͱΠέͯΔαʔϏεΛ ࡞Γଓ͚Δٕज़ IJUPEF

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IJUPEF

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IJUPEF झຯ͸Πϯλʔωοτ

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͸ͯͳϒϩά

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͸ͯͳϒϩά ೥݄։ൃ։࢝ ೥݄Ќ൛ ೥݄ਖ਼ࣜԽ ։ൃ೥໨ ·ͩ·ͩ։ൃத

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͸ͯͳϒϩάͷΫϥε਺

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։ൃམͪண͍ͨαʔϏε

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·ͩ·ͩ։ൃத

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ΠέͯΔαʔϏεͱ͸

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໾ཱͭ ଎͍ ͨͷ͍͠ ͔͍͍ͬ͜ Πϝʔδ͕Α͍ ΈΜͳ࢖ͬͯΔ

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ͦͷͨΊʹ͸ ։ൃΛܧଓ ໎Θͣॻ͚Δ Ұ؏ͨ͠ࢦ਑ ࠷৽ͷࢦ਑

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ࣗݾ঺հ ʙࠓ·Ͱ ͸ͯͳϒϩά ࡞ͬͯ·͢

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͍Ζ͍Ζ͋ͬͨͷͰ ͍͍࿩Λ͍ͨ͠

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࿩͍ͨ͜͠ͱ ϑϨʔϜϫʔΫͷྺ࢙ ϒϩάͷϑϨʔϜϫʔΫ ΦϒδΣΫτࢦ޲ ϨΨγʔͳίʔυͷॻ͖׵͑ υϝΠϯۦಈઃܭ ໊લ ৮Γ΍͢͞

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ࣾ಺ϑϨʔϜϫʔΫͷྺ࢙

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)BUFOB ΞϯςφμΠΞϦʔਓྗ )BUFOB ϒοΫϚʔΫϑΥτϥΠϑάϧʔϓΞΠσΞϦϯά 3JEHF.P$P ϒοΫϚʔΫϋΠΫίίελʔϥϯυ0OF

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3JEHF 3BJMT෩ͷ8"' .P$P "DUJWF3FDPSE෩ͷ03.

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3JEHF package Bookmark::Engine::Index; use strict; use warnings; use Bookmark::Engine -Base; sub default : Public { my ($self, $r) = @_; $r->res->content_type('text/plain'); $r->res->content('Welcome to the Ridge world!'); } 1; IUUQTHJUIVCDPNIBUFOB)BUFOB5FYUCPPLCMPCNBTUFSNWDXFCBQQMJDBUJPONE

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3JEHF #PPLNBSL&OHJOF*OEFY #PPLNBSL&OHJOF 3JEHF&OHJOF

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3JEHF DPOUSPMMFS͸ܧঝ Ϋϥε໊͔ΒϧʔςΟϯά

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3JEHF ݁ہશ෦ಡ·ͳ͍ͱ ಈ͔ͤͳ͍ ͷͰ͍ͨ΁Μ

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%#*Y.P$0 "DUJWF3FDPSE෩ͷ03. package Vocaloid::MoCo::Artist; use base 'DBIx::MoCo'; __PACKAGE__->table('artist'); my $artists = Vocaloid::MoCo::Artist->search( where => { name => { -like => 'ڸԻ%' }, }, order => 'id ASC', limit => 10, ); $artists->each(sub { print $_->name, "\n"; });

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.P$P 7PDBMPJE.P$P"SUJTU %#*Y.P$P

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3JEHF.P$P ͱΓ͋͑ͣܧঝ͔ͯ͠Β࢖͏ ෆࢥٞͳग़དྷࣄ͕ى͖Δ ෆࢥٞͳͱ͖ʹίʔυಡΉ

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ϓϩδΣΫτ΁ͷ૊ࠐΈ TVCNPEVMFʹ௥Ճ େ͖͍ͷ͔Βখ͍͞ͷ·Ͱ ϓϩδΣΫτʙ

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ίʔυ͸ެ։͞ΕͯΔ͚Ͳ ओʹࣾ಺Ͱͷར༻

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ޙํޓ׵ੑอͭඞཁ ڍಈͷมߋ͸ϞϯΩʔύον

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ͳ͔ͳ͔͍ͨ΁Μͳ͜ͱ΋

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%#*Y.P$P-JTU 3VCZͷ"SSBZ෩ͷΠϯλʔϑΣΠε my $artists = Vocaloid::MoCo::Artist->search( where => { name => { -like => 'ڸԻ%' }, }, order => 'id ASC', limit => 10, ); $artists->each(sub { print $_->name, "\n"; });

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%#*Y.P$P-JTU 3VCZͷ"SSBZ෩ͷΠϯλʔϑΣΠε ϦετΫϥε-JTU3VCZJTI my $artists = Vocaloid::MoCo::Artist->search( where => { name => { -like => 'ڸԻ%' }, }, order => 'id ASC', limit => 10, ); $artists->each(sub { print $_->name, "\n"; });

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EFMFUF@JG $list = DBIx::MoCo::List->new([1, 2, 3, 4]); $list->delete_if(sub { ($_ % 2) == 0) }); $list->dump #=> [2, 4] IUUQTNFUBDQBOPSHQPE%#*Y.P$P-JTU

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EFMFUF@JG $list = List::Rubyish->new([1, 2, 3, 4]); $list->delete_if(sub { ($_ % 2) == 0) }); $list->dump #=> [1, 3] IUUQTNFUBDQBOPSHQPE-JTU3VCZJTI

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EFMFUF@JG # DBIx::MoCo#delete_if sub delete_if { my ($self, $code) = @_; croak "Argument must be a code" unless ref $code eq 'CODE'; my $last_index = $self->_last_index; for (0..$last_index) { my $item = $self->shift; local $_ = $item; $self->push($item) if $code->($_); } return $self; }

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EFMFUF@JG # List::Rubyish sub delete_if { my ($self, $code) = @_; croak "Argument must be a code" unless ref $code eq 'CODE'; my $last_index = $self->_last_index; for (0..$last_index) { my $item = $self->shift; local $_ = $item; $self->push($item) unless $code->($_); } return $self; }

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$self->push($item) if $c

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$self->push($item) unles

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Ͳ͕ͬͪফ͑Δ͔෼͔Βͳ͍ ϓϩδΣΫτʹΑͬͯ͸ ϞϯΩʔύονͰڍಈม͑ͨΓ ˠEFMFUF@JG͸࢖ͬͯ͸͍͚ͳ͍

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ͳ͔ͳ͔͍ͨ΁Μ

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ηϚϯςΟοΫͳόʔδϣ χϯά͕͋Ε͹ͪΐͬͱ· ͔ͩͬͨ͠΋͠Εͳ͍

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ϥϘ͸ࣗ༝

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ϥϘͰ3BJMT

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ϥϘͰ4JOBUSB Quyo

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ࣾ಺ϑϨʔϜϫʔΫͷྺ࢙ ͓ΘΓ

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͸ͯͳϒϩάͷϑϨʔϜϫʔΫ

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:"1$DIP ΅͘ͷ͔Μ͕͍͖͑ͨ͞ΐ ͏ͷ͏͐Ϳ͋΀Γ͚ʔ͠ΐ Μ;ΕʔΉΘʔ͘ IUUQXXXTMJEFTIBSFOFUDIPZBQDBTJB

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͜ͷཪͰൃදத ࠓ͙͢ݟʹߦ͜͏

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:"1$DIP ΅͘ͷ͔Μ͕͍͖͑ͨ͞ΐ ͏ͷ͏͐Ϳ͋΀Γ͚ʔ͠ΐ Μ;ΕʔΉΘʔ͘ IUUQXXXTMJEFTIBSFOFUDIPZBQDBTJB

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ಡΉίʔυ͕࠷খ ҆શ

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ϧʔςΟϯά ηΩϡϦςΟରࡦ

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ϒϩάͰ͸ ͋·Γʹγϯϓϧ ܧঝ͠ͳ͍ 03.࢖Θͳ͍ 42-௚઀ॻ͘

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$POUSPMMFS ୯ͳΔΫϥεϝιου package Hatena::Epic::Admin::Index; use strict; use warnings; sub default { my ($class, $r) = @_; $r->res->content('Hello, World!'); $r->res->content_type('text/plain'); }

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$POUSPMMFS 42-΋௚઀ൃߦ package Hatena::Epic::Admin::Index; use strict; use warnings; sub default { my ($class, $r) = @_; my $user = $r->db->single( 'SELECT * FROM user WHERE name=:name', bind => { name => 'sampleuser', }, class => 'Model::User', ); $r->render('index.html', {user => $user}); }

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$POUSPMMFS͸ͨͩͷؔ਺ 42-΋खͰॻ͘ SFOEFS͢Δ)5.-Λࢦఆ

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OP03. 3PXʹCMFTT͢Δ͚ͩ ਌Ϋϥεͳ͠ ୯ͳΔΦϒδΣΫτ

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શ෦खॻ͖ ബ͍ϑϨʔϜϫʔΫͰ ͢͹΍͘։ൃ

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%3:

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ճίϐϖͨ͠Βڞ௨Խ

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ճίϐϖͨ͠Βڞ௨Խ ա৒ͳந৅ԽΛආ͚Δ งғؾΑͦ͞͏

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ΤϯδχΞਓ

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ΤϯδχΞਓ͕ಉ࣌ʹίϐϖ ίϐϖͨ͠42-ʹόά

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ΤϯδχΞਓ͕ಉ࣌ʹίϐϖ ίϐϖͨ͠42-ʹόά ճ௚͢

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σʔλͷอଘ

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DPOUSPMMFS͔Β61%"5& ຖճ޻෉ $POUSPMMFSͰ·ͱΊΔ೿ .PEFMʹTBWFϝιου೿

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.PEFM $POUSPMMFS 7JFX ճίϐϖ͞Εͨ૚

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ίϐϖղফձ৔ $PNNPO

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$PNNPO&OUSZ هࣄʹؔ͢Δૢ࡞ͷ͏ͪ ճίϐϖ͞ΕͨίʔυΛूΊΔ

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ݏͳ༧ײ

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$PNNPOͩͱ ΰϛஔ͖৔Խͦ͠͏

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໊͍͍લʜ

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4FSWJDF

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4FSWJDF&OUSZ هࣄͷݕࡧ΍อଘͳͲ هࣄͷૢ࡞ΛूΊͨ Ϟδϡʔϧ

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͡Ό͋ͦΕͰ

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ݱࡏ 4FSWJDFҎԼʹΫϥε

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ݱࡏ 4FSWJDFҎԼʹΫϥε .PEFM͸Ϋϥε

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ݱࡏ 4FSWJDFҎԼʹΫϥε .PEFM͸Ϋϥε ςʔϒϧ୯ҐͰ͸ͳ͍

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4FSWJDF %%%తʹ͸3FQPTJUPSZ "QQMJDBUJPO4FSWJDF ͋ͱͰొ৔

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ΦϒδΣΫτͷऔಘ my $user = Hatena::Epic::Service::User->find_user_by_name( $db, 'sampleuser' );

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my $entries = Hatena::Epic::Service::Entry->find_entries_of_blog( $db, { blog => $blog, permission => 'public', limit => 3, }); ΦϒδΣΫτͷऔಘ

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ͦͷ࣮૷ 42-खॻ͖ sub find_user_by_name { my ($class, $db, $name) = @_; my $user = $db->single( 'SELECT * FROM user WHERE name=:name', bind => { name => $name, }, class => 'Model::User', ); return $user; }

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อଘ ϒϩάͷొ࿥ my $blog = Hatena::Epic::Service::Register->register_new_blog( $db, { user => $user, id => 'subdomain', domain => 'hatenablog.com', } );

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อଘ ಺෦Ͱ͸*/4&35 sub register_new_blog { my ($class, $db, $values) = @_; ... my $blog = $db->execute( 'INSERT INTO blog ...

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*/4&35Ͱ΋ ؾ࣋ͪ͸ॆ࣮ͨ͠ϝιου register_new_blog join_blog_member post_new_entry reserve_scheduled_entry

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DSFBUF@ͩͱ$36%ײ ؾ෼͕ग़ͳ͍ create_blog create_blog_member create_entry find_or_create_scheduled_entry

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Πϝʔδ ͜ͷ໊લͷΤϯτϦ͍ͩ͘͞ 4FSWJDF&OUSZ .PEFM&OUSZ ͸͍

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Πϝʔδ ͜ͷهࣄอଘ͠ͱ͍ͯ 4FSWJDF&OUSZ .PEFM&OUSZ ͠·ͨ͠

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Πϝʔδ ਓؾͷهࣄूܭͯ͠ 4FSWJDF)PU&OUSZ ͠·ͨ͠

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4FSWJDFͷϝιου͸ ୯ͳΔΫϥεϝιου جఈΫϥεͳ͠ جఈΫϥε͸ංେԽ͕ͪ͠ sub register_new_blog { my ($class, $db, $values) = @_;

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4FSWJDFͷߟ͑ํ ςʔϒϧͱҰରҰʹ͠ͳ͍ ػೳ͝ͱ

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ϒϩάͷओͳςʔϒϧ 6TFS #MPH &OUSZ $PNNFOU

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6TFS #MPH &OUSZ $PNNFOU ͜ΕΒʹू·͍ͬͯ͘ͱ ૿͑͗͢Δ

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1PTU&OUSZ %FMFUF&OUSZ #MPH3FHJTUFS %FTUSPZ"MM4QBNNFST ػೳ໊͝ͱʹ࡞Δ

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ݺͼग़͠ଆ͔ΒݟΔͱ ΦϒδΣΫτಉ࢜ͷ ΍ΓͱΓʹݟ͑ΔΑ͏ʹ ۮવ.Z42-ʹอଘͯ͠Δ

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ཪଆ.POHP%#Ͱ΋ 8FC"1*Ͱ΋ ಉ͡ΠϯλʔϑΣΠε my $user = Hatena::Epic::Service::User->find_user_by_name( $db, 'sample' );

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4FSWJDFͷొ৔ $POUSPMMFSεοΩϦ

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4FSWJDF͸Ͳ͔͜ΒͰ΋ ࢖͑Δ $POUSPMMFS 5FTU #BUDI4DSJQU 0OFUJNF4DSJQU

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͍͍Ͱ͢Ͷ

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͍͍Ͱ͢Ͷ Ϋϥεϝιου࠷ߴ

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͍͍Ͱ͢Ͷ ͍͍͚Ͳ

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͜Ε͸ ΦϒδΣΫτࢦ޲ͳͷ͔

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ͦͷ͜Ζ ΦϒδΣΫτࢦ޲ೖ໳ ಡΜͰͨ

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No content

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࠷ߴ

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0CKFDU 0SJFOUFE 4PGUXBSF $POTUSVDUJPO

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0CKFDU0SJFOUFE 4PGUXBSF$POTUSVDUJPO ΦϒδΣΫτࢦ޲ೖ໳ ݪஶ͸શવೖ໳͡Όͳ͍ ݪஶ͸೥ ೔ຊޠ൛͸೥

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্Լר ϖʔδ

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࠷ߴ

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ষܖ໿ʹΑΔઃܭ ࠷ߴͷষ

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ࣄલ৚݅ࣄޙ৚݅ʜϧʔνϯͷੑ࣭ ෆมද໌ʜΫϥεͷੑ࣭

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Ϋϥεͱސ٬ͷؒͷؔ܎ ͸ɼ͓ޓ͍ͷݖརͱٛ຿Λ ݱͨ͠ਖ਼ࣜͳಉҙͱݟͳ͢ ͜ͱ͕Ͱ͖Δ

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ެཧ \1^"\2^ ೚ҙͷ"ͷ࣮ߦ͸ɼ1ͷঢ় ଶʹͳͬͨͱ͖ʹ࢝·Γɼ 2ͷঢ়ଶʹͳͬͨͱ͖ʹऴ ྃ͢Δ

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ެཧ \1^"\2^ \Y^YY\Y^ ͷؒҧ͍Ͱ͸ͳ͍ ऑ͍৚݅

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ࣄલ৚݅ ϧʔνϯͷݺͼग़͠લʹސ٬͕ຬͨ ͞ͳ͚Ε͹ͳΒͳ͍৚݅ ࣄޙ৚݅ ϧʔνϯͷݺͼग़͠ޙʹڙڅऀ͕ຬ ͨ͞ͳ͚Ε͹ͳΒͳ͍৚݅

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αΠζʹ্ݶͷ͋ΔελοΫ

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ࣄલ৚݅ ελοΫʹۭ͖͕͋Δ͜ͱ ࣄޙ৚݅ ελοΫʹJUFN͕૿͑Δ αΠζ͕૿͑Δ ελοΫ͸ۭͰ͸ͳ͍ $stack->push($item);

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͓ޓ͍ͷ໿ଋ ੹೚֎ͷ͜ͱΛ νΣοΫ͠ͳ͍ ඇ৑௕ੑͷݪଇ

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͓ޓ͍৴པ͢Δ͜ͱͰ ίʔυ͖ͬ͢Γ มͳΤϥʔग़ͨͱ͖ʹ ୭ͷ੹೚͔໌Β͔

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Ϋϥεෆมද໌ ΫϥεΠϯελϯεʹ ڞ௨͢Δશମతͳಛੑ

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͋ΔΦϒδΣΫτͷҰੜ create a.make(...) 4 4 a.f(...) 4 a.g(...)

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͋ΔΦϒδΣΫτͷҰੜ create a.make(...) 4 4 a.f(...) 4 a.g(...) ࣄલ ࣄޙ ࣄલ ࣄޙ ෆม

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͜ͷߟ͑ํ͸ ΫϥεΛઃܭ͢Δͱ͖ 1FSMͰ΋࢖͑Δ

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࢖͑Δ͚Ͳ ݴޠతͳࢧԉ͸ͳ͍

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No content

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࢖͑Δ͚Ͳ ݴޠతͳࢧԉ͸ͳ͍ γʔτϕϧτͳ͠Ͱര૸

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্רͷޙ൒ʙԼר͸ Ԇʑͱܧঝͷ࿩

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छྨͷܧঝ ෦෼ܕܧঝ Ϗϡʔܧঝ ੍໿ܧঝ ֦ுܧঝ ϑΝϯΫγϣφϧόϦΤʔγϣϯܧঝ ܕόϦΤʔγϣϯܧঝ ແޮԽܧঝ ۩ମԽܧঝ ߏ଄ܧঝ ࣮૷ܧঝ ڞ༗ੑ࣭ܧঝ

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ΦϒδΣΫτࢦ޲೉͍͠

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೉қ౓ ܧঝ Ϋϥε ؔ਺ ແ ؆୯ ΍Γͨ͘ͳ͍ ೉͍͠

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ίʔυߦ΋ ॻ͔ͣʹࡁΊ͹ ͦΕʹӽͨ͜͠ͱ͸ͳ͍

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Πϯελϯε࡞Βͣ ܧঝͤͣࡁΊ͹ ͦΕʹӽͨ͜͠ͱ͸ͳ͍

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ඞཁͳ͍ΦϒδΣΫτੜ੒ ඞཁͳ͍ܧঝ ؾΛ͚ͭͯ࠷খʹ

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ϓϩδΣΫτʹ઎ΊΔࢠΫϥε཰ VTFQBSFOUCBTF཰

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ΞϓϦέʔγϣϯશମͰ ࢖͑Δ΋ͷΛઃܭ͠ ࢖͍ଓ͚Δͷ͸೉͍͠

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ঢ়ଶͷͳͯ͘ࡁΉ΋ͷʹ ঢ়ଶΛ༩͑ͯ͸͍͚ͳ͍

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ΫϥεϝιουͳΒ৺഑ͳ͍

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ΦϒδΣΫτࢦ޲ΛֶΜ্ͩͰ ͳΔ΂͘ෳࡶͳࣄଶΛආ͚Δ

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Ϋϥεϝιουͦͷޙ

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Ϋϥεϝιου࠷ߴظ ͳΜͰ΋ΫϥεϝιουͰ ෳࡶͳ͜ͱ͢Δ Ҿ਺ͲΜͲΜ૿͍͑ͯ͘

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͍͍Ͱ͢Ͷ Service::PostEntry->post($db, %values);

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هࣄ͸ෳࡶ WBMVFTͷLFZ͕ݸʙ Service::PostEntry->post($db, %values); title body date url categories user_id blog_id comment_count og_image og_description permission is_scheduled ...

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هࣄΛ౤ߘ هࣄΛߋ৽ Լॻ͖ʹ໭͢ Լॻ͖Λߋ৽ ༧໿౤ߘΛެ։ هࣄΛ࡟আ Ϣʔεέʔε͞·͟·

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ΤϯτϦͷ૊Έཱͯʹ࢖͏Ϋϥε 1PTU&OUSZ'BDUPSZ

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هࣄͷ౤ߘ my $factory = Factory->new; $factory->set_title($title); $factory->set_body($body); $factory->format_body($formatter); ...; $entry = $factory->get_entry;

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Լॻ͖ͷެ։ my $factory = Factory->new; $factory->load_entry($draft); $factory->set_as_public; my $entry = $factory->get_entry;

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ެ։هࣄΛԼॻ͖ʹ໭͢ my $factory = Factory->new; $factory->load_entry($entry); $factory->set_as_private; my $draft = $factory->get_entry;

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೉͍͠ૢ࡞ ॊೈͳΠϯλʔϑΣΠε ෳ਺ਓฤू΍༧໿౤ߘͳͲ ࡞ΕΔΑ͏ʹͳͬͨ

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͋ΔΦϒδΣΫτͷҰੜ create a.make(...) 4 4 a.f(...) 4 a.g(...)

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͍ͯͶ͍ʹ࡞Δͱ ໾ʹཱͭ ΦϒδΣΫτࢦ޲࠷ߴ

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࠷ߴ

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͖ͷ͏ؾ෇͍ͨ

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Լר ࡏݿͳ͍

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ͩΜͩΜΑ͘ͳ͖͚ͬͯͨͲ ੲॻ͍ͨίʔυ͕େྔʹ͋Δ

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ςετίʔυʹ ಉ͡42-͕ ݸ͘Β͍ 4&-&$5'30.FOUSZ

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શ෦ม͑Δͷ͍ͨ΁Μ ੩తղੳͯ͠ॻ͖׵͑

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੩తղੳ ڈ೥ͷൃදΛݟͯ͘Ε

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print (1 * 2) + 3; ߏจ໦

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‘;’ ߏจ໦ ‘print’ ‘ ‘ List ‘ ‘ ‘ ‘ ‘1’ ‘ ‘ ‘*’ ‘ ‘ ‘2’ ‘+’ ‘3’ Statement Document print (1 * 2) + 3;

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ߏจ໦ print "(1 * 2) + 3";

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‘;’ ߏจ໦ ‘print’ ‘ ‘ Statement Document print "(1 * 2) + 3"; ‘"(1 * 2) + 3"’

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͜͏͍͏΍ͭͰ ಛఆͷτʔΫϯྻΛஔ׵ ͢Δ΍ͭ࡞ͬͨ

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4&-&$5'30.FOUSZ ˣ 4FSWJDF&OUSZpOE@FOUSZ

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3FQMBDF.FUIPE$BMM IUUQIJUPEFIBUFOBCMPHDPNFOUSZ

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ओʹςετͰίϐϖ͞Ε· ͬͯͨ͘42-Λ 4FSWJDF૚ʹҠৡ

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εΫϦϓτͰճͯ͠ίϛοτ ߦ΄Ͳػցతʹมߋ

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"QQ135 1FSMͷϦϑΝΫλϦϯά πʔϧ࡞Γ·ͨ͠ ;ͩΜ͍͢͝࢖ͬͯΔ ڈ೥ͷൃදݟͯ͘Ε

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௕೥։ൃͯ͠Δͱ ஌ݟू·ͬͯ͘Δ ৽͍͠ࢦ਑ʹ͋Θͤͯ ͋ͱ͔Β௚ͤΔͷ͕ॏཁ

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աڈΛࣺͯ ࠷ߴͷઃܭʹ ޲͔͍͍ͨ

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࠷ߴ

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ΤϦοΫɾΤϰΝϯεͷ υϝΠϯۦಈઃܭ ग़൛ ೔ຊޠ൛ ,JOEMF൛

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ίΞυϝΠϯʹूதͯ͠ ॆ࣮ͨ͠ϞσϧΛ࡞Ζ͏

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ίΞυϝΠϯ ιϑτ΢ΣΞͷ͏ͪ ΋ͬͱ΋ॏཁͰ೉͍͠ͱ͜Ζ

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ίΞυϝΠϯʹ஫ྗ ίΞυϝΠϯҎ֎Ͱ ࡞ΓࠐΈ͗͢Δͱແବ

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ϨΠϠԽΞʔΩςΫνϟ

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ϨΠϠԽΞʔΩςΫνϟ ϢʔβΠϯλϑΣʔε ΞϓϦέʔγϣϯ υϝΠϯ ΠϯϑϥετϥΫνϟ

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ϨΠϠԽΞʔΩςΫνϟ ϢʔβΠϯλϑΣʔε ΞϓϦέʔγϣϯ υϝΠϯ ΠϯϑϥετϥΫνϟ ৘ใͷදࣔɼίϚϯυͷղऍ ௐ੔໾ബ͍૚ Ϗδωεϧʔϧ ιϑτ΢ΣΞͷ֩৺ ӬଓԽ΍ϝοηʔδૹ৴ͳͲ Ұൠతͳٕज़

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υϝΠϯͷΦϒδΣΫτ ΤϯςΟςΟ ஋ΦϒδΣΫτ

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ΤϯςΟςΟ Ϣʔβʔ΍ϒϩά ঢ়ଶΛ࣋ͭ ಉ໊͡લͰ΋ผΠϯελϯε Ұҙͷ*%

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஋ΦϒδΣΫτ ෆมͳ΋ͷ ྫ৭ɼ਺ࣈɼ਺ ΠϯελϯεΛڞ༗Ͱ͖Δ

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͸ͯͳϒϩάʹ͓͚Δ ΤϯςΟςΟͷྫ .PEFM6TFS .PEFM#MPH .PEFM&OUSZ

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͸ͯͳϒϩάʹ͓͚Δ ஋ΦϒδΣΫτͷྫ .PEFM#MPH1MVT#BEHF

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ΤϯςΟςΟͱ ஋ΦϒδΣΫτ ҙࣝͯ͠࡞Δͱ ߟ͑Δ͜ͱ͕ݮΔ

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ΤϯςΟςΟ͍ͨ΁Μ ͳΔ΂͘஋ΦϒδΣΫτʹ

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ΤϯςΟςΟͷҰੜ create a.make(...) 4 4 a.f(...) 4 a.g(...)

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஋ΦϒδΣΫτͷҰੜ create a.make(...) 4 ঢ়ଶͳ͠

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ͦͷଞ αʔϏε

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αʔϏε υϝΠϯͷૢ࡞Ͱ͋Γͳ͕ ΒΤϯςΟςΟʹ΋஋Φϒ δΣΫτʹ΋མͪண͔ͳ͍

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ঢ়ଶΛ࣋ͨͳ͍αʔϏεͱ ͯ͠ಠཱͤ͞Δ ྫޱ࠲ͷৼସػೳ

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$POUSPMMFS͔Β୤ग़ͨ͠ ͱ͜Ζ4FSWJDFʹ୧Γͭ ͍͚ͨͲυϝΠϯۦಈઃܭ తʹ͸Ұൠతͳ֓೦ͩͬͨ

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࠷ߴ

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࠷ۙͷϓϩδΣΫτ %%%ΛऔΓೖΕΑ͏

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͸ͯͳϒοΫϚʔΫ ϑϧεΫϥονத XJUI4DBMB

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4DBMBؔ੢4VNNJU ͸ͯͳϒοΫϚʔΫJO4DBMB IUUQXXXTMJEFTIBSFOFUPBSBUTDBMB

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υϝΠϯۦಈઃܭχϡʔε

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࠷ߴ

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࣮ફυϝΠϯۦಈઃܭ ۩ମతͳ࣮૷ +BWB )JCFSOBUF .POHP%#

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ࣾ಺Ͱษڧձ िষ ͏ͪͷϓϩδΣΫτͰ͸ʙ ײ૝΍࣭໰͸ (JU)VC*TTVF

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ΈΜͳͰಡΉͱ௙Δ

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ʮ͸ͯͳࣾ಺Ͱ։࠵ͨ͠ %%%ษڧձͷ༷ࢠΛ͝঺ հ͠·͢ʯ IUUQEFWFMPQFSIBUFOBTUB⒎DPNFOUSZ

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໊લͷ࿩

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ϢϏΩλεݴޠ νʔϜͰڞ༗͢Δݴޠ ීஈͷձ࿩͔Βίʔυ·Ͱ

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શһ͕ಉ͡ݴ༿Ͱ࿩ͤΔͱ௙Δ

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٬ʮে༉ʯ ৬ਓʮࢵʯ ࣮ࡍʹ͸ಉ͡΋ͷΛࢦ͢

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σΟϨΫλʔʮ͓Έ͘͡ʯ ΤϯδχΞʮ-PUΫϥεʯ ࣮ࡍʹ͸ಉ͡΋ͷΛࢦ͢

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͜ΕͰ͸͍͚ͳ͍

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ΤϯδχΞ΋ σΟϨΫλʔ΋ σβΠφʔ΋ اը΋ฤू΋ νʔϜϝϯόʔશһ ಉ͡ݴ༿Λ࿩͢

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৽نҊ݅Λ࢝ΊΔͱ͖ͷձ࿩ ʮ˓˓ͱººɼ;ͩΜͲͬͪͰݺͼ·͔͢ʯ ʮºº͔ͳʯ ʮººΫϥε࡞Γ·͢ʯ ʮºº͸˚˚͠·͔͢ʯ ʮºº͸˘˘͠·͢ʯ ˠººΫϥεʹ˘˘ϝιου࡞Δ

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DMBTT0NJLVKJ DMBTT0NJLVKJ$PNQPOFOU DMBTT0NJLVKJ7JFX PNJLVKJVSBOBV

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೔ຊޠ͕͍͍͔͸ٞ࿦ͷ༨஍ JGPNJLVKJFNQUZ NPTJPNJLVKJLBSB

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೔ຊޠ͕͍͍͔͸ٞ࿦ͷ༨஍ ެ༻ޠ͕ӳޠͩͱΑ͍ JGPNJLVKJFNQUZ NPTJPNJLVKJLBSB

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·ͩ·ͩ͜Ε͔Β

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͸ͯͳϒϩά΋ ౷ҰͰ͖ͯͳ͍

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αΠυόʔʹஔ͚Δ΍ͭ

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αΠυόʔʹஔ͚Δ΍ͭ ΢ΟδΣοτ Ϟδϡʔϧ

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ϓϩδΣΫτ໊ ͸ͯͳϒϩά

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ίʔυωʔϜ &QJD

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)BUFOB&QJD 1FSM )BUFOB%JBSZ +4 )BUFOB#MPH $IFG

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OFX)BUFOB%JBSZ#MPHT#MPH

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OFX)BUFOB%JBSZ#MPHT#MPH ϓϩδΣΫτ໊ ϒϩάΛ഑৴͢ΔυϝΠϯ ϒϩάͭΛ͋ΒΘ͢Ϟσϧ

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·ͩ·ͩ͜Ε͔Β

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໊લͷ؅ཧ

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༻ޠूNE νʔϜϝϯόʔͰ߹ҙ͔ͯ͠Βهೖ HJUͰ؅ཧ ΤϯςΟςΟͷछྨ ʮ˓˓ϖʔδʯͱ͔ ϝϯόʔ૿͑ͨͱ͖ʹָ ߋ৽ΊΜͲ͏

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ίϝϯτʹॻ͘ ࣮૷ͱͷဃ཭͕গͳ͍ ϒϩάνʔϜͰ͸ฤू΍اըͷਓʹ ΋͔·ΘͣίʔυΛݟ͍ͤͯΔ ʮͪΐͬͱ͸Կ΍ͬͯΔ͔Θ͔ͬͨʯ

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ձ࿩ l࠷΋௕ظؒϢϏΩλεݴޠͷݱঢ়Λ ͖ͪΜͱද͠ଓ͚Δͷ͸ɼνʔϜͰ ͷձ࿩΍ίʔυ಺ͷϞσϧͩɽz ࣮ફυϝΠϯۦಈઃܭ1

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΄͔ͷ࿩୊

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ίʔυ͸ม͑ΒΕΔ ετϨʔδ͸Ή͔͍ͣ͠ BMUFSUBCMF ஌ݟืू

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޷ධ ൃചத

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৮Γ΍͢͞

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͸ͯͳΠϯλʔϯ ʙ

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ϒϩάνʔϜͰ͸ ೥͔Β Πϯλʔϯੜड͚ೖΕ

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νʔϜ഑ଐ͔Β िؒͷ͏ͪʹ Կ౓͔ϦϦʔε Կ౓͔ࠂ஌

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͸ͯͳڭՊॻ (JU)VCͰެ։த IUUQTHJUIVCDPNIBUFOB)BUFOB5FYUCPPL

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ΠϯλʔϯڭՊॻ ੲ͸3JEHF.P$P ϒϩάͷΞʔΩςΫνϟΛ΋ͱʹ࡮৽ ৽ਓݚमͰ΋

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༨ܭͳ͜ͱ͠ͳ͍ͷͰ ؾʹͳͬͨΒશ෦ಡΊΔ

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ࠓ೥ͷΠϯλʔϯ ͓ͱͱ͍഑ଐ ΋͏৽ػೳಈ͖ͭͭ͋Δ

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ΦϒδΣΫτࢦ޲΍%%% ؾʹ͠ͳͯ͘΋ γϯϓϧʹॻ͚Δ

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·ͱΊ

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࿩͍ͨ͜͠ͱ ϑϨʔϜϫʔΫͷྺ࢙ ϒϩάͷϑϨʔϜϫʔΫ ΦϒδΣΫτࢦ޲ ϨΨγʔͳίʔυͷॻ͖׵͑ υϝΠϯۦಈઃܭ ໊લ ৮Γ΍͢͞