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How can I rename a database column in a Ruby on Rails migration?
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If the column is already populated with data and live in production, I'd recommend a step by st...
In Python, using argparse, allow only positive integers
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edited Jan 23 at 6:32
Mahdi-Malv
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answered ...
How can I include a YAML file inside another?
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– danielpops
Mar 8 '18 at 10:32
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How do I search for an object by its ObjectId in the mongo console?
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answered Nov 22 '11 at 20:32
Tyler BrockTyler Brock
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How can you make a custom keyboard in Android?
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PontiosPontios
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CROSS JOIN vs INNER JOIN in SQL
What is the difference between CROSS JOIN and INNER JOIN ?
12 Answers
12
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PostgreSQL “DESCRIBE TABLE”
How do you perform the equivalent of Oracle's DESCRIBE TABLE in PostgreSQL (using the psql command)?
22 Answers
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How do I determine the current operating system with Node.js
...ss.platform
On Mac the variable returns darwin. On Windows, it returns win32 (even on 64 bit).
Current possible values are:
aix
darwin
freebsd
linux
openbsd
sunos
win32
I just set this at the top of my jakeFile:
var isWin = process.platform === "win32";
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How to detect if a script is being sourced
....ksh:
ps $PPID
Than:
./testfile.ksh
PID TTY STAT TIME COMMAND
32320 pts/4 Ss 0:00 -ksh
. ./testfile.ksh
PID TTY STAT TIME COMMAND
32319 ? S 0:00 sshd: user@pts/4
or ps ho cmd $PPID, but this work only for one level of subsessions...
Sorry, I couldn't find...
Check variable equality against a list of values
I'm checking a variable, say foo , for equality to a number of values. For example,
13 Answers
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