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How to get “wc -l” to print just the number of lines without file name?
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I don't like cat - concatenation consumes to much time.
– PoGibas
Apr 19 '12 at 23:43
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How to convert all text to lowercase in Vim
...is way because I am using this construct (:%s/[pattern]/replace/g) all the time so it's more natural.
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When to use StringBuilder in Java [duplicate]
...to consider which compilers your source will use before relying on compile time optimizations.
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Remove DEFINER clause from MySQL Dumps
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FYI --- although it was not the case at the time of this answer, MySQL > 5.6 now ships with a mysqldump(1) that supports "--skip-definer" as an option: dev.mysql.com/doc/refman/5.7/en/…
– Kevin_Kinsey
Aug 14 '18 at 20:53
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How do I find the caller of a method using stacktrace or reflection?
... seems to be a lot slower than creating a new Exception() (approximately 3 times slower). But as already noted, you shouldn't be using code like this in a performance-critical area anyway. ;) A 1.6 JVM only seems to be ~10% slower and, as Software Monkey said, it expresses the intent better than th...
Visualizing branch topology in Git
...problem as you may put it into the ~/.gitconfig file. However, if you sometimes have to log in to a remote machine where you can't modify the config file, you could use a more simple but faster to type version:
git log --graph --oneline
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Using global variables in a function
...dified) global name. Note that this namespace decision happens at compile time, not at runtime -- if you were to read the value of myGlobal inside func1() before you assign to it, you'd get an UnboundLocalError, because Python has already decided that it must be a local variable but it has not had ...
Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
...ome -1294967296 for the typical 32-bit ints with wrap around, while 100000 times adding 30000 to sum would, if that doesn't overflow, increase sum by 3000000000). Note that the same holds for unsigned quantities, with different numbers, overflow of 100000 * data[c] would typically introduce a reduct...
Difference between String#equals and String#contentEquals methods
...he had some very valid points for the difference while comparing execution time, what exceptions are thrown,
If you look at the source code String#equals and String#contentEquals it is clear that there are two overridden methods for String#contentEquals one which take StringBuilder and other Char...
Insert a line at specific line number with sed or awk
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Kudos to you Chris for taking the time to explain all that and lay it out so nicely, but wow this is why I don't like perl.
– rsaw
Mar 5 '16 at 0:22
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