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Saving a Numpy array as an image
...rt images, but it does use a somewhat uncommon color encoding in which the order of the colors is BGR rather than RGB.
– Zvika
Jun 11 at 7:23
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Modifying the “Path to executable” of a windows service
... : 1 NORMAL
BINARY_PATH_NAME : C:\Services\ServiceName
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : <Display name>
DEPENDENCIES :
SERVICE_START_NAME : user-name@domain-name
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Why does X[Y] join of data.tables not allow a full outer join, or a left join?
...n of X[Y]
le <- Y[X]
mallx <- merge(X, Y, all.x = T)
# the column order is different so change to be the same as `merge`
setcolorder(le, names(mallx))
identical(le, mallx)
# [1] TRUE
If you want a full outer join
# the unique values for the keys over both data sets
unique_keys <- uniq...
Are Exceptions in C++ really slow
...l, mostly regardless of language, the two basic language features that are orders of magnitude slower than the rest, because they translate to calls of routines that handle complex data structures, are
exception throwing, and
dynamic memory allocation.
Happily in C++ one can often avoid both in ...
How to check file MIME type with javascript before upload?
...es prior to reading? fileReader.readAsArrayBuffer(blob.slice(0,4))? (2) In order to copy/paste file signatures, shouldn't the header be constructed with leading 0's for(var i = 0; i < bytes.length; i++) { var byte = bytes[i]; fileSignature += (byte < 10 ? "0" : "") + byte.toString(16); } ?
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REST vs JSON-RPC? [closed]
...ents:
Clients are required to know procedure names;
Procedure parameters order, types and count matters. It's not that easy to change procedure signatures(number of arguments, order of arguments, argument types etc...) on server side without breaking client implementations;
RPC style doesn't expos...
Is git good with binary files?
...e git community book (book.git-scm.com/7_how_git_stores_objects.html): "In order to save that space, Git utilizes the packfile. This is a format where Git will only save the part that has changed in the second file, with a pointer to the file it is similar to."
– Wayne Conrad
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What optimizations can GHC be expected to perform reliably?
... also explains the passes fairly well. This page explains the optimization ordering, though, like the majority of the Trac Wiki, it is out of date.
For specifics, the best thing to do is probably to look at how a specific program is compiled. The best way to see which optimizations are being perfor...
Bootstrap 3 jquery event for active tab change
...I'm not getting any alert. Not even an error message. What should I do, in order to bring it outside that loop? I've declared the variable outside the document.ready function.
– SSS
Nov 2 '16 at 12:31
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TypeError: Missing 1 required positional argument: 'self'
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