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How do I temporarily disable triggers in PostgreSQL?
I'm bulk loading data and can re-calculate all trigger modifications much more cheaply after the fact than on a row-by-row basis.
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Is there a way to 'uniq' by column?
I have a .csv file like this:
8 Answers
8
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Rails formatting date
I am posting a date to an API and the required format is as follows:
4 Answers
4
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How to work with complex numbers in C?
...h:
creal(z1): get the real part (for float crealf(z1), for long double creall(z1))
cimag(z1): get the imaginary part (for float cimagf(z1), for long double cimagl(z1))
Another important point to remember when working with complex numbers is that functions like cos(), exp() and sqrt() must be repl...
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Reading output of a command into an array in Bash
...tput of a command in an array, with one line per element, there are essentially 3 ways:
With Bash≥4 use mapfile—it's the most efficient:
mapfile -t my_array &lt; &lt;( my_command )
Otherwise, a loop reading the output (slower, but safe):
my_array=()
while IFS= read -r line; do
my_array+...
Best way to replace multiple characters in a string?
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Replacing two characters
I timed all the methods in the current answers along with one extra.
With an input string of abc&amp;def#ghi and replacing &amp; -&gt; \&amp; and # -&gt; \#, the fastest way was to chain together the replacements like this: text.rep...
Switching to landscape mode in Android Emulator
...inux.
For Mac users, you only need to use the fn key if the setting "Use all F1, F2 etc. keys as function keys" (under System Preferences -&gt; Keyboard) is checked.
left-ctrl+F11on Windows 7
It works fine in Windows 7 for android emulator to change the landscape orientation to portrait and vic...
What are the rules for the “…” token in the context of variadic templates?
...template parameter pack if it appears on the right side of an expression (call this expression pattern for a moment), or it's a pack argument if it appears on left side of the name:
...thing // pack : appears as template arguments
thing... // unpack : appears when consuming the arguments
The ru...
Javascript - Append HTML to container element without innerHTML
...;
font-size: 30px;
outline: none;
padding: 0 20px;
transition: all .3s;
}
button:hover {
background: rgba(7, 99, 53, 1);
color: rgba(255,255,255,1);
}
p {
font-size: 20px;
font-weight: bold;
}
&lt;button type="button" onclick="addChild()"&gt;Append Child&lt;/button&gt;
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