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wkhtmltopdf: cannot connect to X server
I have been using wkthmltopdf to convert html to pdf documents on-the-fly on my linux web server. The program originally needed X11 or similar X server to run correctly, but through many requests by developers to have this run on servers without GUI, I am pretty sure it runs a virtual X server in...
Drawing an image from a data URL to a canvas
How can i open an image in a Canvas ? which is encoded
6 Answers
6
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Android OpenGL ES and 2D
Well, here's my request. I don't know OpenGL already, and I'm not willing to learn it, I want to learn OpenGL ES directly since I'm targeting my development to android, however. I want to learn OpenGL ES in order to develop my 2D games. I chose it for performances purpose (since basic SurfaceView ...
Ternary operator is twice as slow as an if-else block?
I read everywhere that ternary operator is supposed to be faster than, or at least the same as, its equivalent if - else block.
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Stack vs heap allocation of structs in Go, and how they relate to garbage collection
I'm new to Go and I'm experiencing a bit of congitive dissonance between C-style stack-based programming where automatic variables live on the stack and allocated memory lives on the heap and and Python-style stack-based-programming where the only thing that lives on the stack are references/pointer...
Java: random long number in 0
Random class has a method to generate random int in a given range. For example:
16 Answers
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Reordering arrays
Say, I have an array that looks like this:
11 Answers
11
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Write bytes to file
I have a hexadecimal string (e.g 0CFE9E69271557822FE715A8B3E564BE ) and I want to write it to a file as bytes. For example,
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Fastest way to check if string contains only digits
I know a few ways how to check this.
regex, int.parse , tryparse ,looping.
18 Answers
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How can I get a list of locally installed Python modules?
I would like to get a list of Python modules, which are in my Python installation (UNIX server).
30 Answers
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