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String variable interpolation Java [duplicate]
...://en.wikipedia.org/wiki/Variable_interpolation
Edit As of 2019, JEP 326 (Raw String Literals) was withdrawn and superseeded by JEP 355 (Text Blocks). The latter tries to introduce "Text Blocks" into the language:
A text block is a multi-line string literal that avoids the need for
most escap...
What is the purpose of a question mark after a type (for example: int? myVariable)?
...of the System.Nullable struct. A
nullable type can represent the correct range of values for its
underlying value type, plus an additional null value. For example, a
Nullable<Int32>, pronounced "Nullable of Int32," can be assigned any
value from -2147483648 to 2147483647, or it can be ...
Pretty graphs and charts in Python [closed]
...ting library from the folks at Enthought. It uses Enthought's Kiva vector drawing library and currently works only with Wx and Qt with OpenGL on the way (Matplotlib has backends for Tk, Qt, Wx, Cocoa, and many image types such as PDF, EPS, PNG, etc.). The main advantages of Chaco are its speed relat...
Decode Base64 data in Java
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Almost good: this only accepts raw base64 streams, not base64 files. I had to use final byte[] decoded = Base64.getMimeDecoder().decode(encoded); instead. But thanks anyway! (Nice with commons-io FileUtils.readFileToByteArray and FileUtils.writeByteArrayTo...
Can I change the height of an image in CSS :before/:after pseudo-elements?
...ages/pdf.png');
transform: scale(.5);
}
http://jsfiddle.net/Nwupm/
Drawbacks: you need to know the intrinsic dimensions of the image, and it leaves you with some whitespace, which I can't get rid of ATM.
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Tool to generate JSON schema from JSON data [closed]
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After several months, the best answer I have is my simple tool. It is raw but functional.
What I want is something similar to this. The JSON data can provide a skeleton for the JSON schema. I have not implemented it yet, but it should be possible to give an existing JSON schema as basis, so th...
Check if something is (not) in a list in Python
...your element is at the start of the list, in evaluates faster:
lst = list(range(10001))
%timeit 1 in lst
%timeit 10000 in lst # Expected to take longer time.
68.9 ns ± 0.613 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each)
178 µs ± 5.01 µs per loop (mean ± std. dev. of 7 runs, ...
Homebrew’s `git` not using completion
...tion working on OSX without having to restart your terminal:
curl https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.bash -o ~/.git-completion.bash && echo "source ~/.git-completion.bash" >> ~/.bash_profile && source ~/.bash_profile
...
How to check if an object is a generator object in python?
...pes.GeneratorType
<class 'generator'>
>>> gen = (i for i in range(10))
>>> isinstance(gen, types.GeneratorType)
True
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fo...
Replace console output in Python
...called it in a loop in my main function like so:
def main():
for x in range(20):
progress(x)
return
This will of course erase the entire line, but you can mess with it to do exactly what you want. I ended up make a progress bar using this method.
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