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How to round to 2 decimals with Python?
...ces the format spec
0 enables sign-aware zero-padding for numeric types
.2 sets the precision to 2
f displays the number as a fixed-point number
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Generate colors between red and green for a power meter?
I'm writing a Java game and I want to implement a power meter for how hard you are going to shoot something.
19 Answers
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Sorting list based on values from another list?
...f each pair from the sorted, zipped list.
For more information on how to set\use the key parameter as well as the sorted function in general, take a look at this.
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Can you grab or delete between parentheses in vi/vim?
...ng :help various-motions in command mode.
object-select
There is another set of motion commands that you can use in Visual mode to select various text objects.
To solve your specific problem you would do the following:
printf("%3.0f\t%6.1f\n", fahr, ((5.0/9.0) * (fahr-32)));
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Count occurrences of a char in plain text file
... editor after snippets, if snippets enabled
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How to concatenate two MP4 files using FFmpeg?
I'm trying to concatenate two mp4 files using ffmpeg. I need this to be an automatic process hence why I chose ffmpeg. I'm converting the two files into .ts files and then concatenating them and then trying to encode that concated .ts file. The files are h264 and aac encoded and I'm hoping to kee...
How do I obtain the frequencies of each value in an FFT?
... get a measure of how well the input signal correlates with sinusoids at a set of frequencies regardless of the input signal phase. If you are just analyzing frequency content of a signal, you will almost always take the magnitude or magnitude squared of the complex output of the FFT.
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Load RSA public key from file
...ealgorithm() {
return signaturealgorithm;
}
public void setSignaturealgorithm(String signaturealgorithm) {
this.signaturealgorithm = signaturealgorithm;
}
private csrgenerator() {
try {
kpg = KeyPairGenerator.getInstance("RSA");
} catc...
Filter by property
Is it possible to filter a Django queryset by model property?
8 Answers
8
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How to get error message when ifstream open fails
...use of errno.
On system with POSIX standard:
errno is thread-local; setting it in one thread does not affect its
value in any other thread.
Edit (thanks to Arne Mertz and other people in the comments):
e.what() seemed at first to be a more C++-idiomatically correct way of implementing ...