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How do I create a PDO parameterized query with a LIKE statement?
...>prepare('SELECT * FROM table WHERE column LIKE ?');
$query->execute(array('value%'));
while ($results = $query->fetch())
{
echo $results['column'];
}
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jQuery: Check if div with certain class name exists
...), and have a much larger memory impact as well (jQuery has to build up an array of all of the div elements on the page, then go back and loop through them to see whether they have that class, all to throw away the array at the end).
– T.J. Crowder
Apr 25 '11 a...
How to use the 'sweep' function
...
One use is when you're computing weighted sums for an array. Where rowSums or colSums can be assumed to mean 'weights=1', sweep can be used prior to this to give a weighted result. This is particularly useful for arrays with >=3 dimensions.
This comes up e.g. when calculatin...
How do I Geocode 20 addresses without receiving an OVER_QUERY_LIMIT response?
...e stored the lat/long into the DB and retrieving it from DB via AJAX as an array, but it should then passed again to a java script loop, more over i have received 173 locations from DB. Now it shows me the same OVER_QUERY_LIMIT status. Please advice...
– Prabhu M
...
How to check for null in Twig?
... other value that evaluates to false (such as zero, empty string and empty array). Besides, it will cause an error if var is not defined. A safer way would be:
{% if var is not defined or var is null %}
which can be shortened to:
{% if var|default is null %}
If you don't provide an argument to...
Java Reflection Performance
...rom S.O. as bad / misleading information. Cache the created objects in an array in both cases to prevent the optimizer from optimizing it out. (It can't do this in the reflective situation because it can't prove that the constructor doesn't have side-effects)
– Bill K
...
Why does my application spend 24% of its life doing a null check?
...xt 63 are very fast since they'll be present in the cache.
Which makes an array by far the most efficient data structure. Also the reason that the .NET List<> class isn't a list at all, it uses an array for storage. The same for other collection types, like Dictionary, structurally not remote...
What do the following phrases mean in C++: zero-, default- and value-initialization?
...e object’s first named data member is zero-initialized;
— if T is an array type, each element is zero-initialized;
— if T is a reference type, no initialization is performed.
To default-initialize an object of type T means:
— if T is a non-POD class type (clause 9), the default ...
PHP Regex to check date is in YYYY-MM-DD format
...teTime::createFromFormat("Y-m-d", $date);
return $dt !== false && !array_sum($dt::getLastErrors());
This validates the input too: $dt !== false ensures that the date can be parsed with the specified format and the array_sum trick is a terse way of ensuring that PHP did not do "month shifti...
How do I pass command-line arguments to a WinForms application?
... i, args[i]);
}
}
The arguments will then be stored in the args string array:
$ AppB.exe firstArg secondArg thirdArg
args[0] == firstArg
args[1] == secondArg
args[2] == thirdArg
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