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How do I apply the for-each loop to every character in a String?
...o for-each every char in a String is to use toCharArray():
for (char ch: "xyz".toCharArray()) {
}
This gives you the conciseness of for-each construct, but unfortunately String (which is immutable) must perform a defensive copy to generate the char[] (which is mutable), so there is some cost pena...
How to get the command line args passed to a running process on unix/linux systems?
...al options:
ps -fp <pid>
cat /proc/<pid>/cmdline | sed -e "s/\x00/ /g"; echo
There is more info in /proc/<pid> on Linux, just have a look.
On other Unixes things might be different. The ps command will work everywhere, the /proc stuff is OS specific. For example on AIX there is...
What's better to use in PHP, $array[] = $value or array_push($array, $value)?
... I'll have some insight. Thanks for the answer.
– alex
Feb 18 '09 at 4:37
10
Micro-optimisations ...
Creating JSON on the fly with JObject
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Perfect! Exactly what I was looking for, completely forgot about dynamic.
– Karl Anderson
Aug 15 '13 at 16:16
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Proxies with Python 'Requests' module
Just a short, simple one about the excellent Requests module for Python.
10 Answers
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How to append contents of multiple files into one file
...ate) command, with shell redirection (>) into your output file
cat 1.txt 2.txt 3.txt > 0.txt
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In Flux architecture, how do you manage Store lifecycle?
I'm reading about Flux but the example Todo app is too simplistic for me to understand some key points.
3 Answers
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What is the correct JSON content type?
...ve been messing around with JSON for some time, just pushing it out as text and it hasn't hurt anybody (that I know of), but I'd like to start doing things properly.
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How to redirect output to a file and stdout
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The command you want is named tee:
foo | tee output.file
For example, if you only care about stdout:
ls -a | tee output.file
If you want to include stderr, do:
program [arguments...] 2>&1 | tee outfile
2>&1 redirects channel 2 (stderr/standard error) into channel 1 (...