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How to implement onBackPressed() in Fragments?
...ddToBackStack before commit:
@Override
public void onBackPressed() {
int count = getSupportFragmentManager().getBackStackEntryCount();
if (count == 0) {
super.onBackPressed();
//additional code
} else {
getSupportFragmentManager().popBackStack();
}
}
...
How to store a dataframe using Pandas
...at you keep the pandas table in memory as you edit and reload your script.
convert the csv to an HDF5 table
updated use DataFrame.to_feather() and pd.read_feather() to store data in the R-compatible feather binary format that is super fast (in my hands, slightly faster than pandas.to_pickle() on num...
Multiple “order by” in LINQ
...gone all this time without knowing about ThenBy?! (Edit: looks like it was introduced in .NET 4.0, which explains how it slipped past me unnoticed.)
– Jordan Gray
Nov 21 '13 at 15:05
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How do I space out the child elements of a StackPanel?
...n case you would want to re-use the margin between two containers, you can convert the margin value to a resource in an outer scope, f.e.
<Window.Resources>
<Thickness x:Key="tbMargin">0,10,0,0</Thickness>
</Window.Resources>
and then refer to this value in the inner s...
How to make an AJAX call without jQuery?
...error...
});
If you need to load a json file you can use JSON.parse() to convert the loaded data into an JS Object.
You can also integrate req.responseType='json' into the function but unfortunately there is no IE support for it, so I would stick with JSON.parse().
...
Cron jobs and random times, within given hours
...ashscript:
#!/bin/bash
maxdelay=$((14*60)) # 14 hours from 9am to 11pm, converted to minutes
for ((i=1; i<=20; i++)); do
delay=$(($RANDOM%maxdelay)) # pick an independent random delay for each of the 20 runs
(sleep $((delay*60)); /path/to/phpscript.php) & # background a subshell to...
Razor View Engine : An expression tree may not contain a dynamic operation
...s was my problem. If you're not watching carefully, Visual Studio tends to convert what you're typing into the capital "M". It's really irritating.
– RobbieE
Jan 24 '17 at 12:43
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Incrementing a date in JavaScript
...
The easiest way is to convert to milliseconds and add 1000*60*60*24 milliseconds e.g.:
var tomorrow = new Date(today.getTime()+1000*60*60*24);
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Generate array of all letters and digits
...1.8 and 1.9
or
(0...36).map{ |i| i.to_s 36 }
(the Integer#to_s method converts a number to a string representing it in a desired numeral system)
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Differences between C++ string == and compare()?
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std::string::compare() returns an int:
equal to zero if s and t are equal,
less than zero if s is less than t,
greater than zero if s is greater than t.
If you want your first code snippet to be equivalent to the second one, it should actually read:
if (...