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How do I specify the exit code of a console application in .NET?
...ode = -1;. This will be used if nothing else sets the return code or uses one of the other options above).
Depending on your application (console, service, web app, etc) different methods can be used.
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Is there a way to access the “previous row” value in a SELECT statement?
...ow to order things but not how to get the previous value given the current one (EG, you want to order alphabetically) then I don't know of a way to do that in standard SQL, but most SQL implementations will have extensions to do it.
Here is a way for SQL server that works if you can order rows such...
Strings are objects in Java, so why don't we use 'new' to create them?
..."abcd", you get a reference to a single String instance, rather than a new one each time. So you will have:
String a = "abcd";
String b = "abcd";
a == b; //True
but if you had
String a = new String("abcd");
String b = new String("abcd");
then it's possible to have
a == b; // False
(and in...
How to add images to README.md on GitHub?
...ave everything in root). I had been maintaining 2 copies of the README.md, one for local installation in /usr/share/projectname/docs, and one for github. Now, I can just use the same README.md for both since the image filenames work fine in both cases. If I want to post a copy of parts of my README ...
Moving Git repository content to another repository preserving history
I am trying to move only the contents of one repository ( repo1 ) to another existing repository ( repo2 ) using the following commands:
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Swift - class method which must be overridden by subclass
Is there a standard way to make a "pure virtual function" in Swift, ie. one that must be overridden by every subclass, and which, if it is not, causes a compile time error?
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Changing navigation bar color in Swift
...user to change themeColor.
The beautiful thing about this is you can use one reference throughout your whole app for each colour and it'll update based on the user's selected "Theme" and without one it defaults to theme1():
import Foundation
import UIKit
struct Style {
static let availableThem...
Unix shell script find out which directory the script file resides?
...e the responses, they don't add anything useful). The interesting work is done by the mentioned unix command readlink with option -f. Works when the script is called by an absolute as well as by a relative path.
For bash, sh, ksh:
#!/bin/bash
# Absolute path to this script, e.g. /home/user/bin/fo...
XPath - Selecting elements that equal a value
...erty']
The above selects every element in the document that has at least one text-node child with value 'qwerty'.
//*[text() = 'qwerty' and not(text()[2])]
The above selects every element in the document that has only one text-node child and its value is: 'qwerty'.
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jQuery get mouse position within an element
...
One way is to use the jQuery offset method to translate the event.pageX and event.pageY coordinates from the event into a mouse position relative to the parent. Here's an example for future reference:
$("#something").click(f...