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Getting visitors country from their IP
...should never rely on another website to get any data, the website might go down, the service could stop, etc. And if you get an increased number of visitors on your website, this service could ban you.
– machineaddict
Jun 19 '15 at 8:12
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What is an index in SQL?
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@LakshayGarg Sometimes unnecessary indexing can also slow down the execution time of the query, so we should not try index everything. Just like everything has it's own pros and cons.
– Gaurav Rajdeo
Jun 27 '18 at 3:31
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How do I read the contents of a Node.js stream into a string variable?
...er because it is marked "correct on this question". If you are thinking of down clicking, what do you want me to do?)
The key is to use the data and end events of a Readable Stream. Listen to these events:
stream.on('data', (chunk) => { ... });
stream.on('end', () => { ... });
When you receiv...
How to check command line parameter in “.bat” file?
...e. The script DIED. If you were supposed to turn off the reactor somewhere down the line, well - tough luck. You now will die like Harry Daghlian.
You may think - OK, the arguments can't contain quotes. If they do, this happens. Wrong Here's some consolation:
C:\> argq ""bla bla""
""bla
bla""
D...
Visual Studio hot keys change occasionally, specifically F6 vs Ctrl-Shift-B for building. WHY?
...erhaps? Check Tools / Options, Environment / Keyboard. Should see a drop-down for your Keyboard mapping scheme and next to it a Reset button. Hit the reset button.
I'm not responsible for this screwing with your settings - save them prior to doing this just in case you screw the pooch.
Oh, in c...
Regular expression to allow spaces between words
... complete beginners. I recommend an interactive tutorial to get the basics down, however.
– Andrew Cheong
Apr 28 '14 at 9:55
1
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DirectX SDK (June 2010) Installation Problems: Error Code S1023
...mes for Windows and the DirectX SDK). However, just in case that page goes down, here's the method:
Remove the Visual C++ 2010 Redistributable Package version 10.0.40219 (Service Pack 1) from the system (both x86 and x64 if applicable). This can be easily done via a command-line with administrator...
SQL Server: Filter output of sp_who2
... I found that the use of sys.dm_tran_locks is this script massively slows down this code if you have a lot of transaction locks open (for example a long running transaction).
– Mike
Jan 20 '16 at 1:55
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Is memcached a dinosaur in comparison to Redis? [closed]
...Y reliable.
instead of looking at this issue from the perspective getting down the who is faster at the < 100 ms range, look at the performance per "class" of the software.
Does it use only local ram? -> fastest
Does it use remote ram? -> fast
Does it use ram plus hardddisk -> oh hurm...
How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?
... value of NO. self is cast to the BOOL value of YES.
This approach breaks down if it is anything other than a BOOL parameter.
Assuming self is a UIView.
//nil will be cast to NO when the selector is performed
[self performSelector:@selector(setHidden:) withObject:nil afterDelay:5.0];
//self will...