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Calculating frames per second in a game
What's a good algorithm for calculating frames per second in a game? I want to show it as a number in the corner of the screen. If I just look at how long it took to render the last frame the number changes too fast.
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Is arr.__len__() the preferred way to get the length of an array in Python?
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my_list = [1,2,3,4,5]
len(my_list)
# 5
The same works for tuples:
my_tuple = (1,2,3,4,5)
len(my_tuple)
# 5
And strings, which are really just arrays of characters:
my_string = 'hello world'
len(my_string)
# 11
It was intentionally done this way so that lists, tuples and ot...
How to append contents of multiple files into one file
...py the contents of five files to one file as is. I tried doing it using cp for each file. But that overwrites the contents copied from the previous file. I also tried
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How do I get the result of a command in a variable in windows?
...n a Windows batch script (see how to get the result of a command in bash for the bash scripting equivalent). A solution that will work in a .bat file is preferred, but other common windows scripting solutions are also welcome.
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Hash function that produces short hashes?
...mply truncate the result to the desired length, which may be good enough.
For example, in Python:
>>> import hashlib
>>> hash = hashlib.sha1("my message".encode("UTF-8")).hexdigest()
>>> hash
'104ab42f1193c336aa2cf08a2c946d5c6fd0fcdb'
>>> hash[:10]
'104ab42f11'
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Conveniently Declaring Compile-Time Strings in C++
...header) – though this is true of most macroless solutions thanks to the aforementioned constexpr compromise – and the range checking doesn't impress me much because even the lowly constexpr const char * has that. I rolled my own parameter pack string, which can also be made from a literal (using...
Rails: around_* callbacks
...t understand when the around_* callbacks are triggered in relation to before_* and after_* .
2 Answers
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std::enable_if to conditionally compile a member function
...ution in argument deduction of a template argument makes the construct ill-formed. There is no such substitution.
I thought of that too and tried to use std::is_same< T, int >::value and ! std::is_same< T, int >::value which gives the same result.
That's because when the class tem...
How to get the last N rows of a pandas DataFrame?
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Don't forget DataFrame.tail! e.g. df1.tail(10)
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What's the need of array with zero elements?
...ered a hack (as Aniket said), but it was standardized in C99. The standard format for it now is:
struct bts_action {
u16 type;
u16 size;
u8 data[];
} __attribute__ ((packed)); /* Note: the __attribute__ is irrelevant here */
Note that you don't mention any size for the data field. ...