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ctypes - Beginner
...but I wanted an example of a function which passes and returns a variables/arrays to a C++ code. I though I'd include it here in case it is useful to others.
Passing and returning an integer
The C++ code for a function which takes an integer and adds one to the returned value,
extern "C" int add_one...
convert string array to string
I would like to convert a string array to a single string.
9 Answers
9
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How to add a new method to a php object on the fly?
...{
$func = $this->$method;
return call_user_func_array($func, $args);
}
}
}
$foo = new Foo();
$foo->bar = function () { echo "Hello, this function is added at runtime"; };
$foo->bar();
...
Are loops really faster in reverse?
... takes time in ascending loops is evaluating, for each i, the size of your array. In this loop:
for(var i = array.length; i--;)
You evaluate .length only once, when you declare i, whereas for this loop
for(var i = 1; i <= array.length; i++)
you evaluate .length each time you increment i, wh...
How do I call a dynamically-named method in Javascript?
...object properties may be accessed as though the object were an associative array, and that all global objects are actually properties of the window host object.
var method_name = "Colours";
var method_prefix = "populate_";
// Call function:
window[method_prefix + method_name](arg1, arg2);
...
lodash multi-column sortBy descending
There's a nifty method to sort an array of objects based on several properties:
7 Answers
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How to read json file into java with simple JSON library
...
The whole file is an array and there are objects and other arrays (e.g. cars) in the whole array of the file.
As you say, the outermost layer of your JSON blob is an array. Therefore, your parser will return a JSONArray. You can then get JSON...
slf4j: how to log formatted message, object array, exception
...sed n=3 placeholders in the format string and n+1=4 elements in the object array. I had n placeholders in the format string and also n elements in the object array plus an exception as third parameter. My expectation was that the exception would be printed with stacktrace but this never happened. Do...
How do I get the opposite (negation) of a Boolean in Python?
...1 and 0.
So these cannot be used to "negate" a bool.
Negation with NumPy arrays (and subclasses)
If you're dealing with NumPy arrays (or subclasses like pandas.Series or pandas.DataFrame) containing booleans you can actually use the bitwise inverse operator (~) to negate all booleans in an array:...
How do I select a random value from an enumeration?
...
Array values = Enum.GetValues(typeof(Bar));
Random random = new Random();
Bar randomBar = (Bar)values.GetValue(random.Next(values.Length));
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