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How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
...
I was just wrestling with a similar problem myself, but didn't want the overhead of a function. I came up with the following query:
SELECT myfield::integer FROM mytable WHERE myfield ~ E'^\\d+$';
Postgres shortcuts its conditionals, so you shouldn't get any non-integers hitting ...
What's the difference between “groups” and “captures” in .NET regular expressions?
... (pages 437+):
Depending on your view, it either adds
an interesting new dimension to the
match results, or adds confusion and
bloat.
And further on:
The main difference between a Group
object and a Capture object is that
each Group object contains a
collection of Captures repr...
Packing NuGet projects compiled in release mode?
...unction () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f6536629%2fpacking-nuget-projects-compiled-in-release-mode%23new-answer', 'question_page');
}
);
...
Check whether a string contains a substring
...unction () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f7283274%2fcheck-whether-a-string-contains-a-substring%23new-answer', 'question_page');
}
);
...
Create a submodule repository from a folder and keep its git commit history
...>
someFolders
someFiles
someLib <-- we want this to be a new repo and a git submodule!
some files
In the steps bellow, I will refer this someLib as <directory 1>.
At the end, we will have something like this:
<git repository A>
someFolders
someFiles
...
How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples g
...t; Foo()
True
One exception is old-style classes that always come before new-style classes.
>>> class Foo: pass # old-style
>>> class Bar(object): pass # new-style
>>> Bar() < Foo()
False
Is this behavior mandated by the language spec, or is it up ...
Ruby, Difference between exec, system and %x() or Backticks
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They do different things. exec replaces the current process with the new process and never returns. system invokes another process and returns its exit value to the current process. Using backticks invokes another process and returns the output of that process to the current process.
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What is the full path to the Packages folder for Sublime text 2 on Mac OS Lion
... In addition, the user's library directory is now hidden by default in newer versions of OSX. Run chflags nohidden ~/Library in the terminal to reveal them.
– DA.
Jul 4 '13 at 16:51
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Explanation of JSHint's Bad line breaking before '+' error
...bad line break if you use the + before the line break as opposed to in the new line. Like so:
window.location.href = String1 +
'#' +
Sting2 +
'=' +
String3;
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Bootstrap Alert Auto Close
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For a smooth slideup:
$("#success-alert").fadeTo(2000, 500).slideUp(500, function(){
$("#success-alert").slideUp(500);
});
$(document).ready(function() {
$("#success-alert").hide();
$("#myWish").click(function showAlert()...