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How to use a variable to specify column name in ggplot
... whoever heard of ensym() before? BIG SIGH
– CoderGuy123
Jun 4 '19 at 14:37
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Where and why do I have to put the “template” and “typename” keywords?
...}; /* (C) --> */ f_tmpl<X> ();
struct Y { static int const foo = 123; }; /* (D) --> */ f_tmpl<Y> ();
The two different scenarios:
If we instantiate the function-template with type X, as in (C), we will have a declaration of a pointer-to int named x, but;
if we instantiate the ...
How to get an enum value from a string value in Java?
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123
Here's a nifty utility I use:
/**
* A common method for all enums since they can't have anot...
adb server version doesn't match this client
...id SDK(using same port number), to fix this simply go to settings => choose ADB tab => click on the option Use custom Android SDK Tools and set your SDK folder
after you configure this, try to restart your adb by going into folder platform-tools which adb placed and do this command:
./adb...
How to insert an element after another element in JavaScript without using a library?
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123
Straightforward JavaScript Would Be the Following:
Append Before:
element.parentNode.insertB...
How to add Web API to an existing ASP.NET MVC 4 Web Application project?
....Routing, System.Web.Net and System.Net.Http?
– gabed123
Mar 7 '19 at 23:04
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NoSQL - MongoDB vs CouchDB [closed]
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123
If you are coming from the MySQL world, MongoDB is going to "feel" a lot more natural to you b...
Streaming Audio from A URL in Android using MediaPlayer?
...R.id.button1);
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
btn.setOnClickListener(pausePlay);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
get...
Is it pythonic to import inside functions?
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In the long run I think you'll appreciate having most of your imports at the top of the file, that way you can tell at a glance how complicated your module is by what it needs to import.
If I'm adding new code to an existing file I'll usually do the import where it's needed...
What is stack unwinding?
...mple:
void func( int x )
{
char* pleak = new char[1024]; // might be lost => memory leak
std::string s( "hello world" ); // will be properly destructed
if ( x ) throw std::runtime_error( "boom" );
delete [] pleak; // will only get here if x == 0. if x!=0, throw exception
}
int...