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JavaScript check if variable exists (is defined/initialized)
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3153
You want the typeof operator. Specifically:
if (typeof variable !== 'undefined') {
// th...
Trying to embed newline in a variable in bash [duplicate]
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p=$( embed_newline $var ) # Do not use double quotes "$var"
echo "$p"
3. Using $'\n' (less portable)
bash and zsh interprets $'\n' as a new line.
var="a b c"
for i in $var
do
p="$p"$'\n'"$i"
done
echo "$p" # Double quotes required
# But -e not required
Avoid extra leading newli...
Get selected value/text from Select on change
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edited Mar 3 '18 at 9:15
YakovL
4,8141010 gold badges4242 silver badges6060 bronze badges
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How to get UTF-8 working in Java webapps?
...eThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true"
compression="on"
compressionMinSize="128"
noCompressionUserAgents="gozilla, traviata"
compressableMimeType="text/html,text/xml,text/plain,tex...
Colorized Ruby output to the terminal [closed]
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383
Colorize is my favorite gem! :-)
Check it out:
https://github.com/fazibear/colorize
Insta...
How to get datetime in JavaScript?
How to get date time in JavaScript with format 31/12/2010 03:55 AM?
7 Answers
7
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Replace string within file contents
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"t" for text mode is Python 3 only. Also, you provide a context manager for your ouput file, but fail to close your input file, which seems inconsistent.
– Steven Rumbalski
Nov 8 '10 at 21:50
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Make a phone call programmatically
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Cristian RaduCristian Radu
8,33622 gold badges1616 silver badges1111 bronze badges
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How to install latest version of Node using Brew
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answered Feb 20 '11 at 9:13
Lily BallardLily Ballard
164k2525 gold badges355355 silver badges331331 bronze badges
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