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Remove Trailing Spaces and Update in Columns in SQL Server
...bleName
LTRIM - Removes spaces from the left
example: select LTRIM(' test ') as trim = 'test '
RTRIM - Removes spaces from the right
example: select RTRIM(' test ') as trim = ' test'
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Best way to add “current” class to nav in Rails 3
...m using quite the same way as you are. I've just defined helper methods to test for multiple controller or actions:
In application_helper.rb
def controller?(*controller)
controller.include?(params[:controller])
end
def action?(*action)
action.include?(params[:action])
end
Then y...
In Python, if I return inside a “with” block, will the file still close?
... experiment to show the guarantee you get from the finally keywrod is: def test(): try: return True; finally: return False.
– Ehsan Kia
Jul 11 '14 at 19:57
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Copy file remotely with PowerShell
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It's much easier this way.
Copy-Item -Path \\serverb\c$\programs\temp\test.txt -Destination \\servera\c$\programs\temp\test.txt;
By using UNC paths instead of local filesystem paths, you help to
ensure that your script is executable from any client system with
access to those UNC path...
How to rethrow InnerException without losing stack trace in C#?
...ctManager calls SetObjectData
// voila, e is unmodified save for _remoteStackTraceString
}
This wastes a lot of cycles compared to calling InternalPreserveStackTrace via cached delegate, but has the advantage of relying only on public functionality. Here are a couple of common usage patterns ...
JavaScript, elegant way to check nested object properties for null/undefined [duplicate]
... may return a property from anywhere in the chain, it doesn't specifically test for the last property.
– RobG
May 22 '14 at 14:21
2
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jQuery hasAttr checking to see if there is an attribute on an element [duplicate]
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This test actually fails in chrome (and likely all webkit) because a nonexistent attribute in those browsers returns 'false' instead of undefined. karim79 is soooo close, but this will work better: $.fn.hasAttr = function(attr) { ...
Check if user is using IE
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/Edge\/|Trident\/|MSIE /.test(window.navigator.userAgent) I know this works on 10 and 11. If you can verify <IE9 and Edge, edit answer.
– Indolering
May 5 '15 at 23:59
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@selector() in Swift?
...y in Swift. (For example, use optional chaining on protocol types or is/as tests instead of respondsToSelector:, and use closures wherever you can instead of performSelector: for better type/memory safety.)
But there are still a number of important ObjC-based APIs that use selectors, including timer...
MongoDB: How to update multiple documents with a single command?
...ment to update(), where the the third argument is the upsert argument:
db.test.update({foo: "bar"}, {$set: {test: "success!"}}, false, true);
For versions of mongodb 2.2+ you need to set option multi true to update multiple documents at once.
db.test.update({foo: "bar"}, {$set: {test: "success!"...