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Can PostgreSQL index array columns?
...tage from the original Berkeley design of Postgres and very hard to change now. And it's generally working just fine. Here is a thread on pgsql-bugs with Tom Lane commenting on this.
Some PostGis functions (like ST_DWithin()) seem to violate this principal, but that is not so. Those functions are r...
Javascript array search and remove string?
...'B', 'C', 'B'];
t.splice(t.indexOf('B'), 1); // will return ['B'] and t is now equal to ['A', 'C', 'B']
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Is there a range class in C++11 for use with range based for loops?
...ace. range-v3 was always sort-of the reference implementation I'd say. But now I believe the basic range stuff has also recently been voted into C++20, so we will indeed get it in std:: soon! :-)
– Ela782
Jan 3 '19 at 11:56
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How to limit the amount of concurrent async I/O operations?
...hould be using since it's more performant than the original Semaphore), it now boasts the WaitAsync(...) series of overloads, with all of the expected arguments - timeout intervals, cancellation tokens, all of your usual scheduling friends :)
Stephen's also written a more recent blog post about the...
Why is using the rails default_scope often recommend against?
...WHERE "posts"."published" = 't'
Well this is pretty much what we expect. Now lets try:
2.1.1 :004 > Post.new
=> #<Post id: nil, title: nil, published: true, created_at: nil, updated_at: nil>
And there we have the first big problem with default scope:
=> default_scope will aff...
Cookie blocked/not saved in IFRAME in Internet Explorer
...n, a login, or any data collection (***** Analytics, anyone?), you must acknowledge it in your P3P)
STP: Information is retained to meet the stated purpose. This requires information to be discarded at the earliest time possible. Sites MUST have a retention policy that establishes a destruction time...
How will I know when to create an interface?
...robably implement IWalkable, the latter two don't walk, so they wouldn't. Now you ask "why not just have another superclass, WalkingAnimal, that Dog and Cow derive from?". The answer is when you have something completely outside the inheritance tree that also can walk, such as a robot. Robot woul...
Is floating-point math consistent in C#? Can it be?
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I know of no way to way to make normal floating points deterministic in .net. The JITter is allowed to create code that behaves differently on different platforms(or between different versions of .net). So using normal floats in...
PHP mkdir: Permission denied problem
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I know this is an old thread, but it needs a better answer. You shouldn't need to set the permissions to 777, that is a security problem as it gives read and write access to the world. It may be that your apache user does not ha...
Prevent form submission on Enter key press
... from being handled further.
NOTE:
It's been pointed out that keyCode is now deprecated. The next best alternative which has also been deprecated.
Unfortunately the favored standard key, which is widely supported by modern browsers, has some dodgy behavior in IE and Edge. Anything older than IE11...