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How to measure time taken between lines of code in python?
So in Java, we can do How to measure time taken by a function to execute
7 Answers
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What's the reason I can't create generic array types in Java?
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It's because Java's arrays (unlike generics) contain, at runtime, information about its component type. So you must know the component type when you create the array. Since you don't know what T is at runtime, you can't create the array.
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Difference between core and processor
...ory chunks.
A CPU may have one or more cores to perform tasks at a given time. These tasks are usually software processes and threads that the OS schedules. Note that the OS may have many threads to run, but the CPU can only run X such tasks at a given time, where X = number cores * number of hard...
Strip HTML from strings in Python
...a valid substitution for proper HTML sanitizing. The rule is not hard: Any time you insert a plain-text string into HTML output, you should always HTML escape it (using cgi.escape(s, True)), even if you "know" that it doesn't contain HTML (e.g. because you stripped HTML content). However, this is no...
How to write a large buffer into a binary file in C++, fast?
...gned long long), pFile);
}
fclose(pFile);
return 0;
}
I just timed 8GB in 36sec, which is about 220MB/s and I think that maxes out my SSD. Also worth to note, the code in the question used one core 100%, whereas this code only uses 2-5%.
Thanks a lot to everyone.
Update: 5 years have...
cocktail party algorithm SVD implementation … in one line of code?
... between rows and columns are not the same at all. Each row represents the time of the signal, while each column is frequency. I guess this is an estimation and simplification of a more strict expression called spectrogram.
Singular Value Decomposition on spectrogram is used to factorize the signa...
How to add hours to current time in python
I am able to get the current time as below:
2 Answers
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how to convert from int to char*?
...g C-style code while programming in C++ is considered bad practice and sometimes referred as "ghastly style". Do you really want to convert it into C-style char* string? :)
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Convert one date format into another in PHP
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The second parameter to date() needs to be a proper timestamp (seconds since January 1, 1970). You are passing a string, which date() can't recognize.
You can use strtotime() to convert a date string into a timestamp. However, even strtotime() doesn't recognize the y-m-d-h-i-...
Replace one character with another in Bash
...h starting at strings with more than 1000 characters. It seems like bash's time complexity is worse than linear. A small test: x="$(tr -dc 'a-z \n' </dev/urandom | head -c1M)"; time y="$(tr ' ' \\- <<< "$x")"; time z="${x// /-}". With a string length of 1M (=2^20) tr took 0.04s and bash...