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Get the real width and height of an image with JavaScript? (in Safari/Chrome)
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Use the naturalHeight and naturalWidth attributes from HTML5.
For example:
var h = document.querySelector('img').naturalHeight;
Works in IE9+, Chrome, Firefox, Safari and Opera (stats).
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How do I find the current executable filename? [duplicate]
...which could be the same assembly as above, if your code is called directly from a class within your executable):
System.Reflection.Assembly.GetCallingAssembly().Location
If you'd like just the filename and not the path, use:
Path.GetFileName(System.Reflection.Assembly.GetEntryAssembly().Location...
How are GCC and g++ bootstrapped?
...mplemented in C++ but translated by what Stroustrup calls a "preprocessor" from C++ to C; not a full compiler by his definition, but still C++ was bootstrapped in C.
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What is the meaning of prepended double colon “::”?
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This ensures that resolution occurs from the global namespace, instead of starting at the namespace you're currently in. For instance, if you had two different classes called Configuration as such:
class Configuration; // class 1, in global namespace
namespace...
C#: Raising an inherited event
...ou have to Invoke the eventhandler or not).
Then, in classes that inherit from this base class, you can just call the OnFinished or OnLoading methods to raise the events:
public AnotherClass : MyClass
{
public void DoSomeStuff()
{
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OnLoading(EventArgs.Empty);
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Prevent row names to be written to file when using write.csv
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write.csv(t, "t.csv", row.names=FALSE)
From ?write.csv:
row.names: either a logical value indicating whether the row names of
‘x’ are to be written along with ‘x’, or a character vector
of row names to be written.
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How to access command line parameters?
The Rust tutorial does not explain how to take parameters from the command line. fn main() is only shown with an empty parameter list in all examples.
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Should a return statement be inside or outside a lock?
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You can't return from a try block; it must end with a ".leave" op-code. So the CIL emitted should be the same in either case.
– Greg Beech
Nov 5 '08 at 21:25
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Android AsyncTask threads limits?
... database in the phone. For all those operations (updates, retrieving data from db and etc.) I use async tasks. As up till now I didn't see why I shouldn't use them, but recently I experienced that if I do some operations some of my async tasks simply stop on pre-execute and don't jump to doInBackgr...
What is an “unwrapped value” in Swift?
...ar cantBeNil : Int = 4
cantBeNil = nil // can't do this
To get the value from your variable if it is optional, you have to unwrap it. This just means putting an exclamation point at the end.
var canBeNil : Int? = 4
println(canBeNil!)
Your code should look like this:
let optionalSquare: Square?...