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How do I partially update an object in MongoDB so the new object will overlay / merge with the exist
...ote a function something like that:
function _update($id, $data, $options=array()){
$temp = array();
foreach($data as $key => $value)
{
$temp["some_key.".$key] = $value;
}
$collection->update(
array('_id' => $id),
array('$set' => $temp)
...
Calculating sum of repeated elements in AngularJS ng-repeat
...ript below displays a shop cart using ng-repeat . For each element in the array, it shows the item name, its amount and the subtotal ( product.price * product.quantity ).
...
Remove first element from $@ in bash [duplicate]
...
Another variation uses array slicing:
for item in "${@:2}"
do
process "$item"
done
This might be useful if, for some reason, you wanted to leave the arguments in place since shift is destructive.
...
When to use “new” and when not to, in C++? [duplicate]
...d to where necessary.
A second example of when to allocate via new is for arrays. You cannot* change the size of an in-place or stack array at run-time so where you need an array of undetermined size it must be allocated via new.
E.g.
void foo(int size)
{
Point* pointArray = new Point[size];
...
Is there a best practice for generating html with javascript
I'm calling a web service that returns an array of objects in JSON. I want to take those objects and populate a div with HTML. Let's say each object contains a url and a name.
...
Iterate over object keys in node.js
...
What you want is lazy iteration over an object or array. This is not possible in ES5 (thus not possible in node.js). We will get this eventually.
The only solution is finding a node module that extends V8 to implement iterators (and probably generators). I couldn't find any...
How to convert an enum type variable to a string?
...
There really is no beautiful way of doing this. Just set up an array of strings indexed by the enum.
If you do a lot of output, you can define an operator<< that takes an enum parameter and does the lookup for you.
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“#include” a text file in a C program as a char[]
...comes directly from the output of xxd, as the answer says. the name of the array is the input filename. if you're piping data in instead of using an input file, you'll get an list of hexadecimal values instead (without the array declaration or the len variable).
– Hasturkun
...
How to iterate over the keys and values with ng-repeat in AngularJS?
...do so! It's usually better to transform the object in the controller to an array; this makes the intent clearer and decreases the risk for strange/unpredictable behavior in certain cases. And you can sort in the usual way. :-)
– Josh David Miller
Mar 11 '14 at ...
Algorithm to return all combinations of k elements from n
I want to write a function that takes an array of letters as an argument and a number of those letters to select.
71 Answe...