Debugger の Tips - Speaker Deck

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Debugger ͷ Tips @dealforest Toshihro Morimoto 2013/11/13 potatotips #1 13೥11݄13೔ਫ༵೔

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ࣗݾ঺հ http://about.me/dealforest iOS APP / Web Application(perl, ruby) / Flash @dealforest Toshihro Morimoto 13೥11݄13೔ਫ༵೔

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Xcode ͷίϯιʔϧ্Ͱ௕͍ϝιουΛ ೖྗͨ͠ΓΊΜͲ͘͘͞ͳ͍Ͱ͔͢ʁ 13೥11݄13೔ਫ༵೔

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13೥11݄13೔ਫ༵೔

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recursiveDescription ౳ʑ 13೥11݄13೔ਫ༵೔

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ิ׬΋͞Εͳ͍ͷͰ Α͘λΠϙ͠·͢ 13೥11݄13೔ਫ༵೔

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(lldb) po [[[UIApplication sharedApplication] keyWindow] recursiveDescription] (lldb) po [self.view recursiveDescription] 13೥11݄13೔ਫ༵೔

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ͳ͕͍... 13೥11݄13೔ਫ༵೔

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͜Μͳͷ ͏ͬͯΒΕͳ͍... 13೥11݄13೔ਫ༵೔

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Ͱ͸Ͳ͏͢Ε͹ղܾ Ͱ͖Δͷ͔ 13೥11݄13೔ਫ༵೔

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GDB, LLDB Ͱ Command Λఆٛ͠ ͯ΍Ε͹͍͍ͷͰ͢ 13೥11݄13೔ਫ༵೔

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Commannd ͱ͸ p ΍ po(print-object) ͷ͜ͱͰ͢ 13೥11݄13೔ਫ༵೔

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Debugger ʹΑͬͯఆٛͷ ࢓ํ͕͔ΘΓ·͢ 13೥11݄13೔ਫ༵೔

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ࠓճఆٛ͢Δ Command •pv ίϚϯυΛఆٛ • (lldb) pv • po [[[UIApplication sharedApplication] keyWindow] recursiveDescription] ɹ Λ࣮ߦ • (lldb) pv self.view • po [self.view recursiveDescription] Λ࣮ߦ 13೥11݄13೔ਫ༵೔

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GDB ͷ৔߹ ~/.gdbinit deﬁne pv if $argc == 0 po [[[UIApplication sharedApplication] keyWindow] recursiveDescription] end if $argc == 1 po [$arg0 recursiveDescription] end end 13೥11݄13೔ਫ༵೔

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LLDB ͷ৔߹ ~/.lldbinit command regex pv \ 's/^[[:space:]]*$/ po [[[UIApplication sharedApplication] keyWindow] recursiveDescription]/' \ 's/^(.+)$/ po [%1 recursiveDescription]/' 13೥11݄13೔ਫ༵೔

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(lldb) pv (lldb) pv self.view 13೥11݄13೔ਫ༵೔

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\(^o^)/୤λΠϙ 13೥11݄13೔ਫ༵೔

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ଞʹศརͳ Command ~/.gdbinit deﬁne st po [NSThread callStackSymbols] end ~/.lldbinit command regex st 's/^[[:space:]]*$/po [NSThread callStackSymbols]/' stacktrace Λදࣔ͢Δ 13೥11݄13೔ਫ༵೔