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Why is try {…} finally {…} good; try {…} catch{} bad?
I have seen people say that it is bad form to use catch with no arguments, especially if that catch doesn't do anything:
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Stop setInterval call in JavaScript
...rval(fname, 10000); to call a function every 10 seconds in JavaScript. Is it possible to stop calling it on some event?
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Safe (bounds-checked) array lookup in Swift, through optional bindings?
...er, I've happened to stumble on a nicer way of implementing this functionality:
Swift 3.2 and newer
extension Collection {
/// Returns the element at the specified index if it is within bounds, otherwise nil.
subscript (safe index: Index) -> Element? {
return indices.contains(i...
Can I use a :before or :after pseudo-element on an input field?
... am trying to use the :after CSS pseudo-element on an input field, but it does not work. If I use it with a span , it works OK.
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Ruby, !! operator (a/k/a the double-bang) [duplicate]
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In most programming languages, including Ruby, ! will return the opposite of the boolean value of the operand. So when you chain two exclamation marks together, it converts the value to a boolean.
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Is it possible to remove inline styles with jQuery?
...g an inline style ( display:block ). I'm feeling lazy and want to override it with display:none .
15 Answers
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Calculate a Running Total in SQL Server
...em is that the SQL Server implementation of the Over clause is somewhat limited.
Oracle (and ANSI-SQL) allow you to do things like:
SELECT somedate, somevalue,
SUM(somevalue) OVER(ORDER BY somedate
ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW)
AS RunningTotal
FROM Table...
Why does PHP 5.2+ disallow abstract static class methods?
...w a load of strict standards warnings from a project that was originally written without strict warnings:
8 Answers
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Tags for Emacs: Relationship between etags, ebrowse, cscope, GNU Global and exuberant ctags
...tags in StackOverflow, but I am still confused about how Emacs interfaces with these different tag systems to facilitate autocompletion, the looking up of definitions, navigation of source code base or the previewing of doc-strings.
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In JavaScript can I make a “click” event fire programmatically for a file input element?
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You cannot do that in all browsers, supposedly IE does allow it, but Mozilla and Opera do not.
When you compose a message in GMail, the 'attach files' feature is implemented one way for IE and any browser that supports this, and then implemented another way for Firefox and those brow...