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How to execute mongo commands through shell scripts?
...o\"},{$set:{\"this\":\"that\"}});"
> E QUERY SyntaxError: Unexpected token :
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Only get hash value using md5sum (without filename)
...oo | md5sum)) doesn't work? Errors out bash: syntax error near unexpected token $(echo -n foo | md5sum)'
– lkraav
Aug 26 '15 at 4:42
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C++ valarray vs. vector
...ided to use std::vector while paying close attention to things like memory allocation and temporary object creation.
Both std::vector and std::valarray store the data in a contiguous block. However, they access that data using different patterns, and more importantly, the API for std::valarray e...
What is the correct syntax for 'else if'?
...elif long before Python AFAICT. Obviously, in that context having a single-token directive is valuable, since parsing #else if <code> vs. #else <code that could theoretically even be an if statement> would've complicated a syntax that was intended to be bog-simple.
–...
How do I get a background location update every n minutes in my iOS application?
...oken;
dispatch_once(&onceToken, ^{
sharedInstance = [[self alloc] init];
LocationManager *instance = sharedInstance;
instance.locationManager = [CLLocationManager new];
instance.locationManager.delegate = instance;
instance.locationManager.desiredAccur...
Run JavaScript code on window close or page refresh?
... from sending your request to something like http://example.com/script.php?token=something&var1=val1&var2=val2 thus putting those values into GET.
– Mike
May 15 '19 at 22:36
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JavaScript: replace last occurrence of text in a string
...of it, you could get around the 'space' problem by splitting with an empty token.
String.prototype.reverse = function () {
return this.split('').reverse().join('');
};
String.prototype.replaceLast = function (what, replacement) {
return this.reverse().replace(new RegExp(what.reverse()), re...
What is an API key? [closed]
...By and large, however, an API key is the name given to some form of secret token which is submitted alongside web service (or similar) requests in order to identify the origin of the request. The key may be included in some digest of the request content to further verify the origin and to prevent ta...
Are arrays passed by value or passed by reference in Java? [duplicate]
...itself is passed by value, confused yet?). Quick example:
// assuming you allocated the list
public void addItem(Integer[] list, int item) {
list[1] = item;
}
You will see the changes to the list from the calling code. However you can't change the reference itself, since it's passed by value:...
Design by contract using assertions or exceptions? [closed]
... of recovery can take place. For example, it may be that you're trying to allocate memory. When you catch a 'std::bad_alloc' exception it might be possible to free up memory and try again.
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