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postgresql COUNT(DISTINCT …) very slow
... answered Feb 6 '13 at 15:17
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Force unmount of NFS-mounted directory [closed]
...e that has hung. I've tried to force an unmount, but it doesn't seem to work:
6 Answers
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Better way to check variable for null or empty string?
Since PHP is a dynamic language what's the best way of checking to see if a provided field is empty?
10 Answers
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Is there a job scheduler library for node.js? [closed]
Is there some cron like library that would let me schedule some function to be ran at certain time (15:30 for example, not x hours from now etc)? If there isn't this kind of library how this should be implemented? Should I just set callback to be called every second and check the time and start jobs...
in_array() and multidimensional array
I use in_array() to check whether a value exists in an array like below,
22 Answers
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Where to place private methods in Ruby?
Most of the blogs or tutorials or books have private methods at the bottom of any class/module. Is this the best practice?
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AngularJS and its use of Dollar Variables
Does anyone know if the reasoning behind the use of dollar methods and variables in angularJS is to instruct angularJS to avoid checking those values when a digestion is going on? So, if angular comes across $scope.$value and $scope.value , then it will avoid checking the former since it's prefix...
ASP.Net: Literal vs Label
...HTML-encoded, or rendered without any changes, or have any "unsupported markup-language elements" removed.
If you're not applying any styles (e.g. by using Label's CssClass property), it will be fine to replace Label controls with Literal controls.
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What is an Intent in Android?
..., apps or the OS might be listening for it and will react accordingly. Think of it as a blast email to a bunch of friends, in which you tell your friend John to do something, or to friends who can do X ("intent filters"), to do X. The other folks will ignore the email, but John (or friends who can d...
What is a 'multi-part identifier' and why can't it be bound?
...change the order of joins, change some groupings and then it eventually works, but I just don't quite get it.
18 Answers
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