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When to use wrapper class and primitive type
...bjects very rapidly or if many many many of them build up over a period of time. However, i'd expect a decent programmer to be able to identify these special cases either avoid or amend accordingly. I never said that it's NEVER significant, however generally speaking, it isn't.
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PHP: Return all dates between two dates in an array [duplicate]
...ke a look at the DatePeriod class:
$period = new DatePeriod(
new DateTime('2010-10-01'),
new DateInterval('P1D'),
new DateTime('2010-10-05')
);
Which should get you an array with DateTime objects.
To iterate
foreach ($period as $key => $value) {
//$value->format('Y-m-d'...
When do you use map vs flatMap in RxJava?
...ired as expected, and will cause confusion. I've been bitten by this a few times as I'm still learning RX Java. I find flatMap is a sure-fire way of ensuring things get processed as you expect.
– user924272
Jun 17 '18 at 17:22
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Click outside menu to close in jquery
...e answer is right, but it will add a listener that will be triggered every time a click occurs on your page. To avoid that, you can add the listener for just one time :
$('a#menu-link').on('click', function(e) {
e.preventDefault();
e.stopPropagation();
$('#menu').toggleClass('open');
...
What's the most efficient test of whether a PHP string ends with another string?
...
@Nathan No, it's not worth the time to benchmark since substr_compare() works nicely.
– David Harkness
Jan 31 '19 at 23:02
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Is there a bash command which counts files?
...'s being generated, so the output of ls is never in memory at any point in time.
-- File names are separated from the command using -- so as not to be understood as arguments to ls (in case log* is removed)
The shell will expand log* to the full list of files, which may exhaust memory if it's a lo...
Repairing Postgresql after upgrading to OSX 10.7 Lion
...Mountain Lion you can just create the dir and do the symlink and not waste time doing the find unless the symlink doesn't work.
PS - my PostgreSQL was installed through the official installer.
share
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What is 'Currying'?
...t. (In lambda calculus, for example, functions only take one argument at a time.)
– Sam DeFabbia-Kane
Aug 30 '09 at 23:00
1
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Using Java 8's Optional with Stream::flatMap
...ator. If misused it can indeed make code hard to understand.) However, sometimes things can be too clever. The modified code also starts off with an Optional<Other>. Then it calls Optional.map which is defined as follows:
If a value is present, apply the provided mapping function to it, an...
In Clojure 1.3, How to read and write a file
..."tmp/test.txt"))
The file function is also in clojure.java.io.
PS2: Sometimes it's handy to be able to see what the current directory (so ".") is. You can get the absolute path in two ways:
(System/getProperty "user.dir")
or
(-> (java.io.File. ".") .getAbsolutePath)
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