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How to list all users in a Linux group?
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Unfortunately, there is no good, portable way to do this that I know of. If you attempt to parse /etc/group, as others are suggesting, you will miss users who have that group as their primary group and anyone who has been adde...
Can I use Objective-C blocks as properties?
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{
// need to release the block since the property was declared copy. (for heap
// allocated blocks this prevents a potential leak, for compiler-optimized
// stack blocks it is a no-op)
// Note that for ARC, this is unnecessary, as with all properties, the memory management is handled ...
How to calculate the SVG Path for an arc (of a circle)
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Expanding on @wdebeaum's great answer, here's a method for generating an arced path:
function polarToCartesian(centerX, centerY, radius, angleInDegrees) {
var angleInRadians = (angleInDegrees-90) * Math.PI / 180.0;
return {
x: centerX + (radius * Math.cos(angleInRad...
Deep copy of a dict in python
I would like to make a deep copy of a dict in python. Unfortunately the .deepcopy() method doesn't exist for the dict . How do I do that?
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How to Loop through items returned by a function with ng-repeat?
...nction or you can use property? http://jsfiddle.net/awnqm/1/
Long answer
For simplicity I will describe only your case - ngRepeat for array of objects. Also, I'll omit some details.
AngularJS uses dirty checking for detecting changes. When application is started it runs $digest for $rootScope. $d...
Getting the parent div of element
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You're looking for parentNode, which Element inherits from Node:
parentDiv = pDoc.parentNode;
Handy References:
DOM2 Core specification - well-supported by all major browsers
DOM2 HTML specification - bindings between the DOM and HTML
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Identity increment is jumping in SQL Server database
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You are encountering this behaviour due to a performance improvement since SQL Server 2012.
It now by default uses a cache size of 1,000 when allocating IDENTITY values for an int column and restarting the service can "lose" unused values (The cache size is 10,000 for big...
How can I expand and collapse a using javascript?
I have created a list on my site. This list is created by a foreach loop that builds with information from my database. Each item is a container with different sections, so this is not a list like 1, 2, 3... etc. I am listing repeating sections with information. In each section, there is a subse...
Android: Force EditText to remove focus? [duplicate]
I would like to be able to remove the focus from the EditText. For example if the Keyboard appears, and the user hides it with the back button, I would like the focus and the cursor to disappear. How can it be done?
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Database development mistakes made by application developers [closed]
...indices
This is a relatively easy one but still it happens all the time. Foreign keys should have indexes on them. If you're using a field in a WHERE you should (probably) have an index on it. Such indexes should often cover multiple columns based on the queries you need to execute.
2. Not enfo...