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Which, if any, C++ compilers do tail-recursion optimization?
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edited Jul 4 '18 at 10:53
answered Aug 29 '08 at 7:40
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What does the ^ operator do in Java?
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422
The ^ operator in Java
^ in Java is the exclusive-or ("xor") operator.
Let's take 5^6 as exa...
String.format() to format double in java
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answered Feb 3 '11 at 11:04
David TangDavid Tang
84.3k2828 gold badges156156 silver badges144144 bronze badges
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Perl flags -pe, -pi, -p, -w, -d, -i, -t?
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4 Answers
4
Active
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Multiline strings in JSON
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420
JSON does not allow real line-breaks. You need to replace all the line breaks with \n.
eg:
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Get last n lines of a file, similar to tail
...f tail( f, lines=20 ):
total_lines_wanted = lines
BLOCK_SIZE = 1024
f.seek(0, 2)
block_end_byte = f.tell()
lines_to_go = total_lines_wanted
block_number = -1
blocks = [] # blocks of size BLOCK_SIZE, in reverse order starting
# from the end of the file
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Kill a Process by Looking up the Port being used by it from a .BAT
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14 Answers
14
Active
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Switch case with fallthrough?
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314
Use a vertical bar (|) for "or".
case "$C" in
"1")
do_this()
;;
"2" | "3")
do_what_...
How to convert a std::string to const char* or char*?
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edited Oct 6 '14 at 7:44
community wiki
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