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What are the best practices for using a GUID as a primary key, specifically regarding performance?
...UID as Primary Key. Honestly, I haven't seen any problem, but I'm about to start a new application and I still want to use the GUIDs as the Primary Keys, but I was thinking of using a Composite Primary Key (The GUID and maybe another field.)
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Running V8 Javascript Engine Standalone
...do) brew install v8, depending on your machine this may take some time. To start the V8 console, just run v8 - Voilà!
Tip: To quit the console, just run quit() and dont forget the parentheses!
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How can I load storyboard programmatically from class?
... find proper way to load and show storyboard programmatically. Project was started developing with xib, and now it's very hard to nest all xib files in storyboard. So I was looking a way to do it in code, like with alloc, init, push for viewControllers. In my case I have only one controller in sto...
Understanding how recursive functions work
...er words, if you want to know the sum of all the integers between 2 and 5, start by computing the sum of all the integers between 3 and 5, then add 2.
So how do you compute the sum of all the integers between 3 and 5, inclusive? Well, that sum is
3 + 4 + 5
which can be thought of instead as
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Node.js Unit Testing [closed]
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If I was starting a new project now I'd probably use Mocha as the test framework
– evilcelery
Nov 6 '12 at 16:30
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Android device chooser - My device seems offline
...er the problem is in adb or the device but I usually do the following:
Restart adb by issuing 'adb kill-server' followed by 'adb start-server' at a cmd prompt
Disable and re-enable USB debugging on the phone
Rebooting the phone if it still doesn't work.
99% of my issues have been resolved with t...
how to get last insert id after insert query in codeigniter active record
...id;
}
In case of multiple inserts you could use
$this->db->trans_start();
$this->db->trans_complete();
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How to go back to previous page if back button is pressed in WebView?
...wise when the user presses back too many times they end up at a blank app "start" screen, with no option for the user to move forward.
– George Armhold
Nov 12 '12 at 16:49
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What's the difference between MyISAM and InnoDB? [duplicate]
...ement values (it resets them to the highest ids in the tables when MySQL restarts). So if you use InnoDB and you need unique ids, you need to implement a workaround (e.g. keep the latest ids in a separate table).
– Finesse
Feb 10 '18 at 3:43
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How to zero pad a sequence of integers in bash so that all have the same width?
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Use awk like this:
awk -v start=1 -v end=10 'BEGIN{for (i=start; i<=end; i++) printf("%05d\n", i)}'
OUTPUT:
00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
Update:
As pure bash alternative you can do this to get same output:
for ...