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Efficient way to return a std::vector in c++
...not be moved; and RVO is a compiler-dependent thing! Talk about the things from 80s & 90s.
– Nawaz
Mar 11 '18 at 16:01
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How to ignore xargs commands if stdin input is empty?
...s /empty_dir/ | xargs -i cp {} {}.bak # every {} is replaced with the args from one input line
ls /empty_dir/ | xargs -I ARG cp ARG ARG.bak # like -i, with a user-specified placeholder
Keep in mind that xargs splits the line at whitespace but quoting and escaping are available; RTFM for details.
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How to capture the “virtual keyboard show/hide” event in Android?
...m/guide/topics/resources/runtime-changes.html#HandlingTheChange
Sample:
// from the link above
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Checks whether a hardware keyboard is available
if (newConfig.hardKeybo...
Understanding repr( ) function in Python
...n thing is that you get a fairly good idea of the type and logical "value" from looking the the repr output.
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Is it necessary to explicitly remove event handlers in C#
...ansferService.Transfer(source, destination);
// We now have to unsusbcribe from the event
transferService.BandwidthChanged -= ui.HandleBandwidthChange;
(You'd actually want to use a finally block to make sure you don't leak the event handler.) If we didn't unsubscribe, then the BandwidthUI would l...
Fastest Way of Inserting in Entity Framework
...he context after SaveChanges and create a new one. This clears the context from all entites, SaveChanges doesn't do that, the entities are still attached to the context in state Unchanged. It is the growing size of attached entities in the context what slows down the insertion step by step. So, it i...
How to make a HTTP request using Ruby on Rails?
I would like to take information from another website. Therefore (maybe) I should make a request to that website (in my case a HTTP GET request) and receive the response.
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Interface defining a constructor signature?
...ters)
{
}
}
Now you'll need to create a new class that inherits from both the IDrawable interface and the MustInitialize abstract class:
public class Drawable : MustInitialize<GraphicsDeviceManager>, IDrawable
{
GraphicsDeviceManager _graphicsDeviceManager;
public Drawable...
How to convert JSON to CSV format and store in a variable
...if (ShowLabel) {
var row = "";
//This loop will extract the label from 1st index of on array
for (var index in arrData[0]) {
//Now convert each value to string and comma-seprated
row += index + ',';
}
row = row.slice(0, -1);
//append Label row with line break...
Why are my JavaScript function names clashing?
...Generally, it's more subtle - see stackoverflow.com/questions/336859/… . From the compiler perspective, they're different - but from the programmer perspective - we're close enough to it to claim that. That's why I added that long "while incorrect in terms of parsing order, the code you have is se...