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MongoDB Aggregation: How to get total records count?
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This is one of the most commonly asked question to obtain the paginated result and the total number of results simultaneously in single query. I can't explain how I felt when I finally achieved it LOL.
$result = $collection->aggr...
Is a statically-typed full Lisp variant possible?
...sible? Does it even make sense for something like this to exist? I believe one of a Lisp language's virtues is the simplicity of its definition. Would static typing compromise this core principle?
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Find rows that have the same value on a column in MySQL
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The accepted answer doesn't work with Postgres, this one does.
– azio
Dec 11 '12 at 2:33
@HLGEM:...
Replacing all non-alphanumeric characters with empty strings
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The second one doesn't answer the question. What about characters like : / \ etc?
– WW.
Dec 29 '14 at 4:03
add ...
How can I sanitize user input with PHP?
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There's one case where I think filtering is the right solution: UTF-8. You don't want invalid UTF-8 sequences all over your application (you might get different error recovery depending on code path), and UTF-8 can be filtered (or re...
How do I pass JavaScript variables to PHP?
...something more human-friendly (like $row['name'], if table "salaried" have one)
}
?>
</select>
<?php endif ?>
</p>
<p>
<input type="submit" value="Sumbit my choice"/>
</p>
</form>
&l...
How to restore to a different database in sql server?
I have a backup of Database1 from a week ago. The backup is done weekly in the scheduler and I get a .bak file. Now I want to fiddle with some data so I need to restore it to a different database - Database2 .
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Throw away local commits in Git
...it revert makes new commits to remove old commits in a way that keeps everyone's history sane.
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List to array conversion to use ravel() function
... copy arrays but simply return them, so it's a good habit to use it unless one it's sure to wawnt a copy of the original data
– EnricoGiampieri
Apr 7 '13 at 22:25
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What's the difference between deadlock and livelock?
...of the
processes involved in the livelock
constantly change with regard to one
another, none progressing. Livelock is
a special case of resource starvation;
the general definition only states
that a specific process is not
progressing.
A real-world example of
livelock occurs when two people meet
in ...