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Java String array: is there a size of method?
I come from a php background and in php, there is an array_size() function which tells you how many elements in the array are used.
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make_unique and perfect forwarding
...hout it.
In order to do its job, std::shared_ptr must allocate a tracking block in addition to holding the storage for the actual pointer. However, because std::make_shared allocates the actual object, it is possible that std::make_shared allocates both the object and the tracking block in the same...
How can I center a div within another div? [duplicate]
... http://www.w3schools.com/css/css_align.asp but the basic idea is that for block level elements you simply specify the desired width and set the left and right margins to auto.
.center {
margin-left: auto;
margin-right: auto;
width: 50px;
}
Please note: This answer only applies to block...
Can you use CSS to mirror/flip text?
...cale(1, -1);
transform: scale(1, -1);
DEMO:
span{ display: inline-block; margin:1em; }
.flip_H{ transform: scale(-1, 1); color:red; }
.flip_V{ transform: scale(1, -1); color:green; }
<span class='flip_H'>Demo text &#9986;</span>
<span class='flip_V'>Demo text &...
Save PL/pgSQL output from PostgreSQL to a CSV file
... statement, because there is no way of connecting the input/output stream. PHP's PostgreSQL handler (not PDO) includes very basic pg_copy_from and pg_copy_to functions which copy to/from a PHP array, which may not be efficient for large data sets.
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Prefer composition over inheritance?
...ifference, it's easier to explain.
Procedural Code
An example of this is PHP without the use of classes (particularly before PHP5). All logic is encoded in a set of functions. You may include other files containing helper functions and so on and conduct your business logic by passing data around i...
After submitting a POST form open a new window showing the result
...
var urlAction = 'whatever.php';
var data = {param1:'value1'};
var $form = $('<form target="_blank" method="POST" action="' + urlAction + '">');
$.each(data, function(k,v){
$form.append('<input type="hidden" name="' + k + '" value="' + v ...
Create an index on a huge MySQL production table without table locking
...on a ~5M rows MySQL table. It is a production table, and I fear a complete block of everything if I run a CREATE INDEX statement...
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In Ruby, how do I skip a loop in a .each loop, similar to 'continue' [duplicate]
...wnto, each_with_index, select, map and other iterators (and more generally blocks).
For more info see http://ruby-doc.org/docs/ProgrammingRuby/html/tut_expressions.html#UL.
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Error 1801 : Security Error Receiving Blocks from Browser. - App Inven...
Error 1801 : Security Error Receiving Blocks from Browser.
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[hide]App Inventor 对配套应用的每次调用都使用哈希函数（特别是 HMAC）进行签名，并且配套应用在执行代码之前会验证该哈希，以防止可能试图让您的手机执行恶...