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How to use a link to call JavaScript?
...onal unit of work into different physical places in your source file, or spread over many source files. If you put a javascript call in your a href tag it is painfully clear by looking at one line what's going on. I would be concerned about separating that functionality into different physical place...
brew install mysql on macOS
...
I think one can end up in this position with older versions of mysql already installed. I had the same problem and none of the above solutions worked for me. I fixed it thus:
Used brew's remove & cleanup commands, unloaded the launchctl script, then deleted the mysql directory in /usr/local...
What exactly do the Vagrant commands do?
...t on. Example: like attaching another SATA Virtual Disk.
vagrant up
This reads your configuration file - vagrantfile and then creates a VM from base box. Base Box is like a Template. You can create many VMs from it.
Similarly, vagrant destroy destroys your VM. In this case all changes you made w...
ANTLR: Is there a simple example?
... is a very brief explanation. I encourage you to browse the ANTLR wiki and read some tutorials and/or play a bit with what I just posted.
Good luck!
EDIT:
This post shows how to extend the example above so that a Map<String, Double> can be provided that holds variables in the provided expre...
How to make junior programmers write tests? [closed]
...t, and I get done in about the same time, only with a partial test suite already in place.
(I don't live in a commercial programming environment, and am often the only coder working a particular project.)
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How to use PHP OPCache?
...es the php files in compiled form in memory. So you don't have overhead of reading from disk and compiling & optimizing of files by the php parser anymore. Memcache is something you can use to store variables in between sessions. Sayt for example a user has an update script that requests the sam...
JavaScript checking for null vs. undefined and difference between == and ===
... typeof comparison above), == and === will behave exactly the same.
More reading:
Angus Croll's Truth, Equality and JavaScript
Andrea Giammarchi's JavaScript Coercion Demystified
comp.lang.javascript FAQs: JavaScript Type-Conversion
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How to speed up insertion performance in PostgreSQL
... pg_dump output, much of this doesn't apply since pg_dump and pg_restore already do things like creating triggers and indexes after it finishes a schema+data restore).
There's lots to be done. The ideal solution would be to import into an UNLOGGED table without indexes, then change it to logged an...
How can I make setInterval also work when a tab is inactive in Chrome?
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I would change the next-last line of the code to read before = now; to get the elapsed time since the start instead of the end of the previous call. This is usually what you want when animating things. As it is now, if an execution of the interval function takes 15ms, elaps...
Simple way to copy or clone a DataRow?
...e");
The .Select() function got several options and this one e.g. can be read as a SQL
SELECT * FROM sourceTable WHERE searchColumn = value;
Then you can import the rows you want as described above.
targetTable.ImportRows(rows[n])
...for any valid n you like, but the columns need to be the ...