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What is the fastest or most elegant way to compute a set difference using Javascript arrays?
...returning the amount (2 in this case) of elements of A which are not in B. Converting 2 into array is pointless...
– Alex
Mar 2 '18 at 12:29
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Set a DateTime database field to “Now”
...setting the SQLparameter to DateTime.Now will do this or If I should first convert the date to a string and then add it to the request ?
– Thibault Witzig
Dec 20 '10 at 9:41
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Comparing mongoose _id and strings
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converting object id to string(using toString() method) will do the job.
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float64 with pandas to_csv
...ad the CSV file as usual and you will get those integer figures back. Then convert those values to floating point, dividing by the same factor you multiplied before.
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getMonth in javascript gives previous month
...conds...) which are always used as numbers as they are, the month is often converted to text, using an array of names, which is of course 0-based. It was already the case in C standard libraries, which must be over 40 years old.
– jcaron
Aug 24 '17 at 8:40
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Is it possible to use argsort in descending order?
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@user3666197 Yes, that's a good point - if an array is taking up 50% available memory, we will certainly want to avoid copying it and causing swapping. I'll edit again to mention that a copy is created there.
– wim
Aug...
Differences between unique_ptr and shared_ptr [duplicate]
...ated with make_shared. But if you create a unique_ptr<Derived>, then convert it to unique_ptr<Base>, and if Derived is virtual and Base is not, then the pointer will be deleted through the wrong type and there can be undefined behaviour. This can be fixed with an appropriate deleter-type...
Concatenate a vector of strings/character
..._num_str_named$e4 <- 'this is added'
Here is the a function that will convert named or unnamed list to string:
ffi_lst2str <- function(ls_list, st_desc, bl_print=TRUE) {
# string desc
if(missing(st_desc)){
st_desc <- deparse(substitute(ls_list))
}
# create string
st_strin...
CSS styling in Django forms
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one issue with this method is that this filter converts the BoundField into SafeString, so other (similar) filters cannot be chained. django-widget-tweaks returns fields so it's a more robust solution.
– minusf
Sep 24 at 9:09
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In C#, how to check if a TCP port is available?
...to get to an array of TcpConnectionInformation objects, which you can then interrogate about endpoint IP and port.
int port = 456; //<--- This is your value
bool isAvailable = true;
// Evaluate current system tcp connections. This is the same information provided
// by the netstat command...