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What is the difference between PS1 and PROMPT_COMMAND
... http://www.gnu.org/software/bash/manual/bashref.html
PROMPT_COMMAND
If set, the value is interpreted as a command to execute before
the printing of each primary prompt ($PS1).
I never used it, but I could have used this back when I only had sh.
...
Pan & Zoom Image
...form.
private void image_MouseMove(object sender, MouseEventArgs e)
{
if (image.IsMouseCaptured)
{
var tt = (TranslateTransform)((TransformGroup)image.RenderTransform)
.Children.First(tr => tr is TranslateTransform);
Vector v = start - e.GetPosition(border);
...
Regular Expressions and negating a whole character group [duplicate]
...e but it's not. I'm trying to match a string which does NOT contain a specific sequence of characters. I've tried using [^ab] , [^(ab)] , etc. to match strings containing no 'a's or 'b's, or only 'a's or only 'b's or 'ba' but not match on 'ab'. The examples I gave won't match 'ab' it's true but...
jQuery load more data on scroll
I am just wondering how can i implement more data on scroll only if the div.loading is visible.
9 Answers
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How can I view the source code for a function?
...) is telling you that t() is a (S3) generic function that has methods for different object classes.
The S3 method dispatch system
For S3 classes, you can use the methods function to list the methods for a particular generic function or class.
> methods(t)
[1] t.data.frame t.default t.ts* ...
Hamcrest compare collections
...
If you want to assert that the two lists are identical, don't complicate things with Hamcrest:
assertEquals(expectedList, actual.getList());
If you really intend to perform an order-insensitive comparison, you can call the...
Representing null in JSON
...hat is the preferred method for returning null values in JSON? Is there a different preference for primitives?
7 Answers
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Inline functions in C#?
...y "force" was used here. Since there were a few downvotes, I'll try to clarify the term. As in the comments and the documentation, The method should be inlined if possible. Especially considering Mono (which is open), there are some mono-specific technical limitations considering inlining or more ge...
Delete keychain items when an app is uninstalled
I am using idandersen's scifihifi-iphone code for keychain and save password using
8 Answers
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SQL Server Text type vs. varchar data type [closed]
...
If you're using SQL Server 2005 or later, use varchar(MAX). The text datatype is deprecated and should not be used for new development work. From the docs:
Important
ntext , text, and image data types will be removed...