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Optimizing away a “while(1);” in C++0x
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Does someone have a good explanation of why this was necessary to allow?
Yes, Hans Boehm provides a rationale for this in N1528: Why undefined behavior for infinite loops?, although this is WG14 document the rationale applies to C++ as well and the documen...
Which is the preferred way to concatenate a string in Python?
...string. And this can be true, in some cases. Here, for example, is one
million appends of a one-character string, first to a string, then to a list:
a += b:
0.10780501365661621
a.append(b):
0.1123361587524414
OK, turns out that even when the resulting string is a million characters long, appendin...
How do I save a String to a text file using Java?
...ke you would to any output stream:
out.println(text);
You'll need exception handling, as ever. Be sure to call out.close() when you've finished writing.
If you are using Java 7 or later, you can use the "try-with-resources statement" which will automatically close your PrintStream when you are d...
Are there constants in JavaScript?
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Since ES2015, JavaScript has a notion of const:
const MY_CONSTANT = "some-value";
This will work in pretty much all browsers except IE 8, 9 and 10. Some may also need strict mode enabled.
You can use var with conventions like ALL_CAPS to show that certain...
Navigation bar show/hide
I have an app with a navigation bar consisting of 2 bar buttons. I would like to hide and show this navigation bar when a user double taps the screen.
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Favicon dimensions? [duplicate]
I have a favicon with the dimensions of height=26px / width=20px named favicon.png
10 Answers
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Is there a way to take a screenshot using Java and save it to some sort of image?
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BufferedImage capture = new Robot().createScreenCapture(screenRect);
ImageIO.write(capture, "bmp", new File(args[0]));
NOTE: This will only capture the primary monitor. See GraphicsConfiguration for multi-monitor support.
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How to get the current working directory in Java?
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public class JavaApplication {
public static void main(String[] args) {
System.out.println("Working Directory = " + System.getProperty("user.dir"));
}
}
This will print a complete absolute path from where your application was initialized...
CSS Display an Image Resized and Cropped
... an URL with a certain width and height even if it has a different size ratio.
So I want to resize (maintaining the ratio) and then cut the image to the size I want.
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Reject binary with state waiting for review (can't find reject binary button)
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In iTunes connect, from 'My apps', select
Click your application, then
Make sure you are on the 'Versions' tab, and that the correct version is selected.
Click 'Remove this version from review' located in the info bubble.
See below
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