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SQL/mysql - Select distinct/UNIQUE but return all columns?
... MySQL, if that's what you're using.)
You could fetch the distinct fields and stick to picking a single arbitrary row each time.
On some platforms (e.g. PostgreSQL, Oracle, T-SQL) this can be done directly using window functions:
select *
from (
select *,
row_number() over (partition...
How to check whether an array is empty using PHP?
...er(): If no callback is supplied, all entries of array equal to FALSE (see converting to boolean) will be removed.
If you'd like to remove all NULL, FALSE and empty strings (''), but leave zero values (0), you can use strlen as a callback, e.g.:
$is_empty = array_filter($playerlist, 'strlen') == ...
How do I add BundleConfig.cs to my project?
...elated question: How to add reference to System.Web.Optimization for MVC-3-converted-to-4 app
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Reading a delimited string into an array in Bash
...
In order to convert a string into an array, please use
arr=($line)
or
read -a arr <<< $line
It is crucial not to use quotes since this does the trick.
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Build tree array from flat array in javascript
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For anyone interested, the code is easily converted to vanilla js: jsfiddle.net/LkkwH/853
– xec
Apr 12 '18 at 9:58
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Pass a variable into a partial, rails 3?
...t the :locals hash is not needed when using Rails 3. The arguments hash is converted into arguments which are passed to the partial.
– superluminary
Jan 13 '12 at 14:36
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Check whether a string contains a substring
...ensitive Substring Example
This is an extension of Eugene's answer, which converts the strings to lower case before checking for the substring:
if (index(lc($str), lc($substr)) != -1) {
print "$str contains $substr\n";
}
...
Python, Unicode, and the Windows console
...))
safeprint(u"\N{EM DASH}")
The bad character(s) in the string will be converted in a representation which is printable by the Windows console.
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Using Razor, how do I render a Boolean to a JavaScript variable?
...o use the namespace System.Xml):
var myViewModel = {
isFollowing: @XmlConvert.ToString(Model.IsFollowing)
};
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What's the best way to check if a file exists in C?
...exists
} else {
// file doesn't exist
}
You can also use R_OK, W_OK, and X_OK in place of F_OK to check for read permission, write permission, and execute permission (respectively) rather than existence, and you can OR any of them together (i.e. check for both read and write permission using R...