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Find out if string ends with another string in C++
...(), ending.length(), ending));
} else {
return false;
}
}
int main () {
std::string test1 = "binary";
std::string test2 = "unary";
std::string test3 = "tertiary";
std::string test4 = "ry";
std::string ending = "nary";
std::cout << hasEnding (test1, end...
How do I select elements of an array given condition?
... the inequalities to evaluate first, so all of the operations occur in the intended order and the results are all well-defined. See docs here.
– calavicci
Nov 16 '17 at 17:58
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Can anyone explain this strange behavior with signed floats in C#?
...
The bug is in the following two lines of System.ValueType: (I stepped into the reference source)
if (CanCompareBits(this))
return FastEqualsCheck(thisObj, obj);
(Both methods are [MethodImpl(MethodImplOptions.InternalCall)])
When all of the fields are 8 bytes wide, CanCompareBits mista...
Understanding FFT output
...tputs because you are using a complex to complex FFT. Remember that you've converted your 32 samples into 64 values (or 32 complex values) by extending it with zero imaginary parts. This results in a symetric FFT output where the frequency result occurs twice. Once ready to use in the outputs 0 to N...
Standardize data columns in R
...the output of scale is Nx1 matrix so ideally we should add an as.vector to convert the matrix type back into a vector type. Thanks Julian!
EDIT 2 (2019): Quoting Duccio A.'s comment: For the latest dplyr (version 0.8) you need to change dplyr::funcs with list, like dat %>% mutate_each_(list(~sca...
Copy a table from one database to another in Postgres
...ll see the insert scripts needed for the table/data. Copy and paste these into the new database sql page in pgAdmin. Run as pgScript - Query->Execute as pgScript F6
Works well and can do multiple tables at a time.
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Replacement for deprecated sizeWithFont: in iOS 7?
...e if you happen to have a weird multi-threading corner case! Here's how I converted NSString sizeWithFont:constrainedToSize::
What used to be:
NSString *text = ...;
CGFloat width = ...;
UIFont *font = ...;
CGSize size = [text sizeWithFont:font
constrainedToSize:(CGSize){width, CGF...
Read file data without saving it in Flask
... If you are uploading a file and have a binary stream, you can easily convert it into a text stream by wrapping it in TextIOWrapper: mystring = TextIOWrapper(binary_stream)
– Dutch Masters
Jul 14 '16 at 14:57
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Python: List vs Dict for look up table
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@John Fouhy: the ints are not stored in the hash table, only pointers, i.e. hou have 40M for the ints (well, not really when a lot of them are small) and 60M for the hash table. I agree that it's not that much of a problem nowadays, still it'...
Better techniques for trimming leading zeros in SQL Server?
...both Leading and Trailing zero's.
--Avoid losing those Trailing zero's and converting embedded spaces into more zeros.
--I added a non-whitespace character ("_") to retain trailing zero's after calling Replace().
--Simply remove the RTrim() function call if you want to preserve trailing spaces.
--If...