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Select distinct values from a table field
...ordering when using distinct(). See the documentation under order_by()
If you don’t want any ordering to be applied to a query, not even the default ordering, call order_by() with no parameters.
and distinct() in the note where it discusses issues with using distinct() with ordering.
To que...
What is the IntelliJ shortcut key to create a javadoc comment?
In Eclipse, I can press Alt + Shift + J and get a javadoc comment automatically generated with fields, returns, or whatever would be applicable for that specific javadoc comment. I'm assuming that IntelliJ IDEA has this feature. Can anyone tell me if there is a keyboard shortcut for this?
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What is the real overhead of try/catch in C#?
...ect this happens only when the exception is thrown (but I don't know), and if so, this would be decently sized hidden cost every time an exception is thrown... so it's not like you are just jumping from one place in the code to another, there is a lot going on.
I don't think it's a problem as long ...
Why does Go have a “goto” statement
... the math/gamma.go file, the goto statement is used:
for x < 0 {
if x > -1e-09 {
goto small
}
z = z / x
x = x + 1
}
for x < 2 {
if x < 1e-09 {
goto small
}
z = z / x
x = x + 1
}
if x == 2 {
return z
}
x = x - 2
p = (((((x...
What's the common practice for enums in Python? [duplicate]
... late, but you can also do Shaded, Shiny, Transparent, Matte = range(1, 5) if you don't like having the _unused there
– Davy8
Jan 30 '11 at 17:42
4
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Unix command to prepend text to a file
...o be prepended;' inFile
-i writes the change in place and take a backup if any extension is given. (In this case, .old)
1s;^;to be prepended; substitutes the beginning of the first line by the given replacement string, using ; as a command delimiter.
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How to add title to subplots in Matplotlib?
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If you need to be able to specify the fontsize, use ax.set_title('title', fontsize=16) instead.
– Tobias P. G.
Jun 19 at 14:56
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Formatting a float to 2 decimal places
..."{0:$#,##0.00;($#,##0.00);Zero}", value);
This will output “$1,240.00″ if passed 1243.50. It will output the same format but in parentheses if the number is negative, and will output the string “Zero” if the number is zero.
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Plot smooth line with PyPlot
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This will not work if the T is not sorted. And also if the functiton(T) is not one-to-one.
– Rahat Zaman
Feb 22 '19 at 1:23
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How to use ADB Shell when Multiple Devices are connected? Fails with “error: more than one device an
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Use the -s option BEFORE the command to specify the device, for example:
adb -s 7f1c864e shell
See also http://developer.android.com/tools/help/adb.html#directingcommands
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