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When is std::weak_ptr useful?
I started studying smart pointers of C++11 and I don't see any useful use of std::weak_ptr . Can someone tell me when std::weak_ptr is useful/necessary?
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Array initialization syntax when not in a declaration
...me of the array creation / initialization constructs were not in Java 1.0, and (IIRC) were added in Java 1.1.
But "why" is immaterial ... the restriction is there, and you have to live with it.
I know how to work around it, but from time to time it would be simpler.
You can write this:
AClas...
contenteditable change events
...ts fired by the editable element, though you need to be aware that keydown and keypress events are fired before the content itself is changed. This won't cover every possible means of changing the content: the user can also use cut, copy and paste from the Edit or context browser menus, so you may w...
How to exit from Python without traceback?
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You are presumably encountering an exception and the program is exiting because of this (with a traceback). The first thing to do therefore is to catch that exception, before exiting cleanly (maybe with a message, example given).
Try something like this in your main r...
android layout: This tag and its children can be replaced by one and a compound drawable
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To expand on Romain Guy's answer, here is an example.
Before:
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:padding="5dp" >
<TextView
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How to call base.base.method()?
...Special Derived.");
var ptr = typeof(Base).GetMethod("Say").MethodHandle.GetFunctionPointer();
var baseSay = (Action)Activator.CreateInstance(typeof(Action), this, ptr);
baseSay();
}
}
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How do you kill a Thread in Java?
...ecated Thread.stop(). It goes into detail about why this was a bad method and what should be done to safely stop threads in general.
The way they recommend is to use a shared variable as a flag which asks the background thread to stop. This variable can then be set by a different object request...
Do we need semicolon at the end? [duplicate]
...rtion: Everything you need to know outlines the concept well in an understandable manner using examples under the headings:
Where Semicolons are Allowed
Where Semicolons May be Omitted
The rules
It even digs into the official ECMAScript specification about the topic.
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How to send an object from one Android Activity to another using Intents?
...effort to use than using Java's native serialization, but it's way faster (and I mean way, WAY faster).
From the docs, a simple example for how to implement is:
// simple class that just has one member property as an example
public class MyParcelable implements Parcelable {
private int mData;
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Does height and width not apply to span?
...roblem. If display: block is specified, span stops to be an inline element and an element after it appears on next line. I need an element which is inline, but could be of desired width.
– Paul
Mar 21 '13 at 17:52
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