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How can I remove duplicate rows?
.../02/18/not-exists-vs-not-in Out of the 3 I think NOT EXISTS performs best. All three will generate a plan with a self join though that can be avoided.
– Martin Smith
Jan 14 '11 at 9:17
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Where is the itoa function in Linux?
itoa() is a really handy function to convert a number to a string. Linux does not seem to have itoa() , is there an equivalent function or do I have to use sprintf(str, "%d", num) ?
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How does git compute file hashes?
...his to the output of echo 'Hello, World!' | git hash-object --stdin. Optionally you can specify --no-filters to make sure no crlf conversion happens, or specify --path=somethi.ng to let git use the filter specified via gitattributes (also @user420667). And -w to actually submit the blob to .git/obje...
Determine a user's timezone
... offset does exactly what it says. It get's the offset. A time ZONE is actually a geographical area. This won't work for daylight savings since you don't know which hemisphere the user lives in, or if their country even has daylight savings. Why not use this instead: >>> date.toTimeString()...
Convert columns to string in Pandas
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to_json() probably does not call astype(str) as it leaves datetime64 and its subclasses as milliseconds since epoch.
– Sussch
Jul 10 '19 at 5:41
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Resolving a Git conflict with binary files
... i.e. --their == currently checked-out branch and --ours is the branch, usually a remote branch, or path spec you're trying to merge into the current branch. The [space]--[space] option disambiguates to path spec between branch name and path spec that both happen to exist with the same name (e.g. an...
How to store a dataframe using Pandas
...at dataframe constantly available in between runs so I don't have to spend all that time waiting for the script to run?
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What is the purpose of the EBP frame pointer register?
...sembly language and have noticed that the x86 code emitted by compilers usually keeps the frame pointer around even in release/optimized mode when it could use the EBP register for something else.
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How does delete[] “know” the size of the operand array?
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When you allocate memory on the heap, your allocator will keep track of how much memory you have allocated. This is usually stored in a "head" segment just before the memory that you get allocated. That way when it's time to free the ...
Uncaught ReferenceError: $ is not defined?
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You are calling the ready function before the jQuery JavaScript is included. Reference jQuery first.
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