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Converting Python dict to kwargs?
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Here is a complete example showing how to use the ** operator to pass values from a dictionary as keyword arguments.
>>> def f(x=2):
... print(x)
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>>> new_x = {'x': 4}
>>> f() # default value x=2
2
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Replace a character at a specific index in a string?
I'm trying to replace a character at a specific index in a string.
8 Answers
8
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Check if bash variable equals 0 [duplicate]
...epth and I would like to test if it equals 0. In case yes, I want to stop executing of script. So far I have:
6 Answers
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How to count duplicate value in an array in javascript
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the extra if statement after the loop is unnecessary... just use for (var i = 0; i <= array_elements.length; i++) { or <= instead of <.
– EmmaGamma
Feb 9 '15 at 1:58
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Convert RGBA PNG to RGB with PIL
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This code was causing a error for me: tuple index out of range. I fixed this by following another question(stackoverflow.com/questions/1962795/…). I had to convert the PNG to RGBA first and then slice it: alpha = img.split()[-1] then use that on the background mask.
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How do I sort a list of dictionaries by a value of the dictionary?
...reverse() statement. Otherwise you can define a comparison like cmp=lambda x,y: - cmp(x['name'],y['name']).
– Mario F
Oct 13 '09 at 7:14
3
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Get the position of a div/span tag
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This function will tell you the x,y position of the element relative to the page. Basically you have to loop up through all the element's parents and add their offsets together.
function getPos(el) {
// yay readability
for (var lx=0, ly=0;
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Does the default constructor initialize built-in types?
... other means. Not by default constructor, nor by constructor at all.
For example, there's a widespread incorrect belief that for class C the syntax C() always invokes default constructor. In reality though, the syntax C() performs so called value-initialization of the class instance. It will only ...
How to bind function arguments without binding this?
...arg2 ... };
}(actualArg1Value, actualArg2Value);
Hope I got the syntax right there. What it does is create a function called withWrappedArguments() (to be pedantic it is an anonymous function assigned to the variable) that you can call any time any where and will always act with actualArg1Val...
How do I pass a unique_ptr argument to a constructor or a function?
...sociated meaning.
(A) By Value
Base(std::unique_ptr<Base> n)
: next(std::move(n)) {}
In order for the user to call this, they must do one of the following:
Base newBase(std::move(nextBase));
Base fromTemp(std::unique_ptr<Base>(new Base(...));
To take a unique pointer by value me...