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Why would a JavaScript variable start with a dollar sign? [duplicate]
...(_) are permitted anywhere in an IdentifierName.
As such, the $ sign may now be used freely in variable names. Certain frameworks and libraries have their own conventions on the meaning of the symbol, noted in other answers here.
...
What is sharding and why is it important?
... advantage would be that search load for the
large partitioned table can now be split across multiple servers
(logical or physical), not just multiple indexes on the same logical
server.
Also,
Splitting shards across multiple isolated instances requires more than
simple horizontal part...
Where does PHP's error log reside in XAMPP?
...side the vm (which took me an embarassingly long time to realise). I only know how to access via the xampp control panel terminal, with a path of: /opt/lampp/logs/php_error_log
– Scott Anderson
Apr 13 '19 at 14:16
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How to use a variable to specify column name in ggplot
...
From the release notes of ggplot2 V3.0.0 :
aes() now supports quasiquotation so that you can use !!, !!!, and
:=. This replaces aes_() and aes_string() which are now
soft-deprecated (but will remain around for a long time).
The idiomatic way now would be to convert ...
Detect if an element is visible with jQuery [duplicate]
...element on my page, but with two buttons, one for hide and one for show. I now want to have one button to toggle both .
...
JQuery to check for duplicate ids in a DOM
...orget I have this running in production and really ought to optimize it by now - or add a debug setting to turn it on/off!
– Simon_Weaver
Mar 18 '11 at 19:15
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Deleting a Google App Engine application
...under Administration.
Click Disable Application.
Click Disable Application Now.
If you want to delete your app:
If billing is enabled for your app, disable billing. You aren't allowed to delete before you do this.
Click Request Permanent Deletion. The application will be deleted in approximately 7...
How do I properly clean up Excel interop objects?
...App.Worksheets.Open(...);
...
Marshal.ReleaseComObject(sheet);
I didn't know that internally C# created a wrapper for the Worksheets COM object which didn't get released by my code (because I wasn't aware of it) and was the cause why Excel was not unloaded.
I found the solution to my problem on t...
How do I rename a column in a database table using SQL?
...
I believe MySQL 8.0 supports this syntax now
– Dan
Apr 23 at 17:41
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jQuery if checkbox is checked
...:checked')) {
// Do something...
alert('You can rock now...');
};
});
});
</script>
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