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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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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'...
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');
...
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)
...
How to get the number of characters in a std::string?
...UErrorCode status)
{
if(U_FAILURE(status))
{
throw std::runtime_error(u_errorName(status));
}
}
size_t countGraphemes(UText* text)
{
// source for most of this: http://userguide.icu-project.org/strings/utext
UErrorCode status = U_ZERO_ERROR;
PUBreakIterator it(ubrk_o...
What is Java String interning?
... share same memory. So if you have list of names where 'john' appears 1000 times, by interning you ensure only one 'john' is actually allocated memory.
This can be useful to reduce memory requirements of your program. But be aware that the cache is maintained by JVM in permanent memory pool which i...
How to shrink/purge ibdata1 file in MySQL
... localhost as a "query tool" for performing statistics in R, that is, everytime I run a R script, I create a new database (A), create a new table (B), import the data into B, submit a query to get what I need, and then I drop B and drop A.
...
What do Clustered and Non clustered index actually mean?
...have many non clustered indices, although each new index will increase the time it takes to write new records.
It is generally faster to read from a clustered index if you want to get back all the columns. You do not have to go first to the index and then to the table.
Writing to a table with a c...
What is the ellipsis (…) for in this method signature?
...e:
void process(String[] s){}
void process(String...s){}
then a compile-time error occurs.
Source: The Java Programming Language specification, where the technical term is variable arity parameter rather than the common term varargs.
...