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How to create ENUM type in SQLite?
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answered Mar 14 '11 at 15:52
MPelletierMPelletier
14.7k1212 gold badges7777 silver badges125125 bronze badges
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Emulating a do-while loop in Bash
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222
Two simple solutions:
Execute your code once before the while loop
actions() {
check_if_...
Hex representation of a color with alpha channel?
...the use rgba() functional notation with decimals or percentages, e.g. rgba(255, 0, 0, 0.5) would be 50% transparent red. RGB channels are 0-255 or 0%-100%, alpha is 0-1.
In CSS 4*, you can specify the alpha channel using the 7th and 8th characters of an 8 digit hex colour, or 4th character of a 4 d...
Rails: Check output of path helper from console
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429
You can show them with rake routes directly.
In a Rails console, you can call app.post_path. T...
See changes to a specific file using git
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Use a command like:
git diff file_2.rb
See the git diff documentation for full information on the kinds of things you can get differences for.
Normally, git diff by itself shows all the changes in the whole repository (not just the current directory).
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append new row to old csv file python
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258
with open('document.csv','a') as fd:
fd.write(myCsvRow)
Opening a file with the 'a' para...
How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array?
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This question discusses the uses left for a C array like int arr[20]; . On his answer , @James Kanze shows one of the last strongholds of C arrays, it's unique initialization characteristics:
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Docker: adding a file from a parent directory
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231
You can build the Dockerfile from the parent directory:
docker build -t <some tag> -f &...
Calling remove in foreach loop in Java [duplicate]
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edited Dec 2 '14 at 11:11
mphizi
1322 bronze badges
answered Jul 28 '09 at 20:43
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Base64: What is the worst possible increase in space usage?
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248
Base64 encodes each set of three bytes into four bytes. In addition the output is padded to al...