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Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)
... thread that locked it is undefined behavior, while doing the same with an error checking or recursive mutex results in a predicable error code. Other systems and standards might behave very different.
– nos
Aug 6 '12 at 21:26
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How to add a second css class with a conditional value in razor MVC 4
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The 2nd option causes the error The "div" element was not closed
– intrepidis
Apr 15 '15 at 14:55
6
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Capture screenshot of active window?
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@joe i get a GDI+ error when trying to run above code. the error occurs in the ScreenCpature class at saving images.
– hurnhu
Apr 11 '14 at 16:52
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.NET Process.Start default directory?
...OOT. +1
– ashes999
Oct 12 '11 at 14:05
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Why does Java's hashCode() in String use 31 as a multiplier?
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edited Sep 12 at 21:05
Dave Jarvis
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How to get the Android device's primary e-mail address
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answered Apr 13 '16 at 12:05
Afzaal IftikharAfzaal Iftikhar
23722 silver badges55 bronze badges
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Why does an NSInteger variable have to be cast to long when used as a format argument?
The code above produces an error:
5 Answers
5
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What is a C++ delegate?
...on pointers.
– J.N.
Mar 6 '12 at 15:05
2
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If I have ACCESS_FINE_LOCATION already, can I omit ACCESS_COARSE_LOCATION?
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Connor TumblesonConnor Tumbleson
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Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
...in seeing this code:
struct foo *s = ...;
int x = s->f;
if (!s) return ERROR;
gcc inferred that since s was deferenced in s->f; and since dereferencing a null pointer is undefined behavior then s must not be null and therefore optimizes away the if (!s) check on the next line.
The lesson ...