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Check if object is a jQuery object
...if statement, you can extend the check to be typeof jQuery === 'function' && obj instanceof jQuery since jQuery does not have to be declared in order for the typeof operator to work without throwing an error.
– Patrick Roberts
Aug 17 '15 at 19:05
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Google Maps V3 - How to calculate the zoom level for a given bounds
...LOBE_WIDTH = 256; // a constant in Google's map projection
var west = <?php echo $minLng; ?>;
var east = <?php echo $maxLng; ?>;
*var north = <?php echo $maxLat; ?>;*
*var south = <?php echo $minLat; ?>;*
var angle = east - west;
if (angle < 0) {
angle += 360;
}
*var a...
Git: list only “untracked” files (also, custom commands)
... It's much more common that I want to add all untracked files (for example, after I move some things around). In any case, thanks for the tip about custom commands. Where is that mechanism documented?
– We Are All Monica
Sep 27 '10 at 6:27
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Why is AJAX returning HTTP status code 0?
... a cookie with a certain domain prefixed with www. When you then call your php script e.g. without the www. prefix in the url, the call will fail and viceversa, too.
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How to slice an array in Bash
...tcut to get all elements of the array starting with specified index. For example "${A[@]:1}" would be the "tail" of the array, that is the array without its first element.
version=4.7.1
A=( ${version//\./ } )
echo "${A[@]}" # 4 7 1
B=( "${A[@]:1}" )
echo "${B[@]}" # 7 1
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Any good boolean expression simplifiers out there? [closed]
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You can try Wolfram Alpha as in this example based on your input:
http://www.wolframalpha.com/input/?i=((A%20OR%20B)%20AND%20(NOT%20B%20AND%20C)%20OR%20C)&t=crmtb01&f=rc
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UIButton: Making the hit area larger than the default hit area
...ets:(UIEdgeInsets)hitTestEdgeInsets {
NSValue *value = [NSValue value:&hitTestEdgeInsets withObjCType:@encode(UIEdgeInsets)];
objc_setAssociatedObject(self, &KEY_HIT_TEST_EDGE_INSETS, value, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
-(UIEdgeInsets)hitTestEdgeInsets {
NSValue *value ...
How do I modify fields inside the new PostgreSQL JSON datatype?
...SON data type, but how do you modify them using UPDATE? I can't find any examples of this in the postgresql documentation, or anywhere online. I have tried the obvious:
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Set environment variables from file of key/value pairs
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This might be helpful:
export $(cat .env | xargs) && rails c
Reason why I use this is if I want to test .env stuff in my rails console.
gabrielf came up with a good way to keep the variables local. This solves the potential problem when going from project to proje...
What's the difference between assignment operator and copy constructor?
...previously uninitialized object from some other object's data.
A(const A& rhs) : data_(rhs.data_) {}
For example:
A aa;
A a = aa; //copy constructor
An assignment operator is used to replace the data of a previously initialized object with some other object's data.
A& operator=(con...