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What's the point of malloc(0)?
...mply define that size-0 allocations are always unsatisfiable (ENOMEM), and now malloc(0) returning 0 (with errno==ENOMEM) is consistent. :-)
– R.. GitHub STOP HELPING ICE
Sep 6 '11 at 3:53
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What does rake db:test:prepare actually do?
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rake db:test:prepare is now deprecated.
– Jngai1297
Jun 17 '14 at 14:49
3
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Difference between Select Unique and Select Distinct
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Unique was the old syntax while Distinct is the new syntax,which is now the Standard sql.
Unique creates a constraint that all values to be inserted must be different from the others.
An error can be witnessed if one tries to enter a duplicate value.
Distinct results in the removal of the dup...
CORS - How do 'preflight' an httprequest?
...ermissions to make the actual request. Your preflight response needs to acknowledge these headers in order for the actual request to work.
For example, suppose the browser makes a request with the following headers:
Origin: http://yourdomain.com
Access-Control-Request-Method: POST
Access-Control-R...
How to output something in PowerShell
...s about what should be written to the console and what should not. We have now agreed that the only information if the script executed successfully or died has to be Write-Host'ed, and everything that is the script's author might need to know about the execution (what items were updated, what fields...
string.ToLower() and string.ToLowerInvariant()
... incorrectly you may have typos in Turkey.
=Using ToLower incorrectly=
Now pretend you are writing an SQL parser. Somewhere you will have code that looks like:
if(operator.ToLower() == "like")
{
// Handle an SQL LIKE operator
}
The SQL grammar does not change when you change cultures. A F...
How to find the largest file in a directory and its subdirectories?
...as I can tell, this notation is still supported by modern GNU sort, though now that I look, it seems to have been dropped from the sort man page after around version 5.1. You can see it in the man page for sort for FreeBSD 4.11. I guess I haven't read sort's man page since before FreeBSD 5.0 was r...
How to change Vagrant 'default' machine name?
... vb.name = "barhost"
end
end
So there it is. You now know 3 different options you can set and the effects they have. I guess it's a matter of preference at this point? (I'm new to Vagrant, so I can't speak to best practices yet.)
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Convert System.Drawing.Color to RGB and Hex Value
...g it may have some problem and need your kind advice. In addition, I dont know whether there is any existing method to do the same.
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How to round float numbers in javascript?
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Upd (2019-10). Thanks to Reece Daniels code below now available as a set of functions packed in npm-package expected-round (take a look).
You can use helper function from MDN example. Than you'll have more flexibility:
Math.round10(5.25, 0); // 5
Math.round10(5.25, -1);...