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Why historically do people use 255 not 256 for database field magnitudes?
You often see database fields set to have a magnitude of 255 characters, what is the traditional / historic reason why? I assume it's something to do with paging / memory limits, and performance but the distinction between 255 and 256 has always confused me.
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Delete multiple remote branches in git
...s because it's a one liner and I can do a dry run first. Unfortunately, it errors out with this message: $ git branch -r | awk -F/ '/\/APR/{print $2}' | xargs -I {} git push origin :{} error: unable to push to unqualified destination: APR-04-DPH The destination refspec neither matches an existing ...
How do I check what version of Python is running my script?
...s, thought about compatibility. If someone use sample in version 3, syntax error will be there waiting.
– Alex Chiang
Jan 13 '17 at 15:44
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The $.param( ) inverse function in JavaScript / jQuery
Given the following form:
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Eclipse jump to closing brace
...edninesided
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What does the `forall` keyword in Haskell/GHC do?
... val = maybe onNothin onJust mval
This code doesn't compile (syntax error) in plain Haskell 98. It requires an extension to support the forall keyword.
Basically, there are 3 different common uses for the forall keyword (or at least so it seems), and each has its own Haskell extension: Scope...
Using wget to recursively fetch a directory with arbitrary files in it
I have a web directory where I store some config files. I'd like to use wget to pull those files down and maintain their current structure. For instance, the remote directory looks like:
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PostgreSQL: Drop PostgreSQL database through command line [closed]
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Not helpful answer as for version 9. The error about opened connections appears still.
– Pavel Vlasov
Apr 17 '14 at 9:25
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How To Set Up GUI On Amazon EC2 Ubuntu server
...after rebooting the machine, ssh stopped connecting with connection timout error. Do you have any idea why its happening?
– Shan Khan
Oct 2 '18 at 10:26
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List of zeros in python [duplicate]
How can I create a list which contains only zeros? I want to be able to create a zeros list for each int in range(10)
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