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Why does ~True result in -2?
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int(True) is 1.
1 is:
00000001
and ~1 is:
11111110
Which is -2 in Two's complement1
1 Flip all the bits, add 1 to the resulting number and interpret the result as a binary representation of the magnitude and add a negative sign (since the number begins with 1):
1111111...
How can I generate UUID in C#
...0F-B6F1-24BFC4D4EE80
EBD133A6-6CF3-4ADA-B723-A8177B70D268
B10A35C0-F012-4EC1-9D24-3CC91D2B7122
UuidCreateSequential generates sequential GUIDs like these:
19F287B4-8830-11D9-8BFC-000CF1ADC5B7
19F287B5-8830-11D9-8BFC-000CF1ADC5B7
19F287B6-8830-11D9-...
clearing a char array c
...en], 0);
– Zan Lynx
Mar 11 '09 at 1:10
Zan Lynx, that's undefined behavior. you cannot do &arr[arr_len]. but you h...
How do you check if a selector matches something in jQuery? [duplicate]
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edited May 23 '17 at 12:10
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111 silver badge
answered Nov 18 '08 at 19:20
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Take the content of a list and append it to another list
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Sven MarnachSven Marnach
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how to check if a file is a directory or regular file in python? [duplicate]
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answered Jul 8 '10 at 14:48
Jesse JashinskyJesse Jashinsky
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How do I disable text selection with CSS or JavaScript? [duplicate]
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answered Sep 23 '10 at 14:44
JeromeJerome
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What's the difference between a Python “property” and “attribute”?
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answered Sep 10 '11 at 21:30
neurinoneurino
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General suggestions for debugging in R
...ion and step through the script line by line.
The best new trick in R 2.10 (when working with script files) is to use the findLineNum() and setBreakpoint() functions.
As a final comment: depending upon the error, it is also very helpful to set try() or tryCatch() statements around external fun...
Linux find file names with given string
...ode from now on.
– Joe
Oct 8 '15 at 10:34
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