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Use of an exclamation mark in a Git commit message via the command line
How do I enter an exclamation point into a Git commit message from the command line?
6 Answers
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Declaration/definition of variables locations in ObjectiveC?
...ew ObjectiveC directives that add OO on top of that. Could you folks helps me understand the best practice and situations where I'd want to use these locations for my variables and perhaps correct my present understanding?
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Getting back old copy paste behaviour in tmux, with mouse
This is what I used to do in tmux to copy-paste (using the mouse, the keyboard works differently and it is not what I am interested about):
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How to do relative imports in Python?
Imagine this directory structure:
15 Answers
15
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What does “abstract over” mean?
...er the phrase "abstract over", but I don't understand the intent. For example , Martin Odersky writes
6 Answers
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Regex expressions in Java, \\s vs. \\s+
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The first one matches a single whitespace, whereas the second one matches one or many whitespaces. They're the so-called regular expression quantifiers, and they perform matches like this (taken from the documentation):
Greedy quantifiers...
postgresql - replace all instances of a string within text field
...stgresql, how do I replace all instances of a string within a database column?
4 Answers
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How to tell where a header file is included from?
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This will give make dependencies which list absolute paths of include files:
gcc -M showtime.c
If you don't want the system includes (i.e. #include <something.h>) then use:
gcc -MM showtime.c
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Is there a generator version of `string.split()` in Python?
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It is highly probable that re.finditer uses fairly minimal memory overhead.
def split_iter(string):
return (x.group(0) for x in re.finditer(r"[A-Za-z']+", string))
Demo:
>>> list( split_iter("A programmer's RegEx test.") )
['A', "programmer's", 'RegEx', 'test...
What happens when a duplicate key is put into a HashMap?
If I pass the same key multiple times to HashMap ’s put method, what happens to the original value? And what if even the value repeats? I didn’t find any documentation on this.
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