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What is the difference between “INNER JOIN” and “OUTER JOIN”?
...u the union of A and B, i.e. all the rows in A and all the rows in B. If som>me m>thing in A doesn't have a corresponding datum in B, then the B portion is null, and vice versa.
select * from a FULL OUTER JOIN b on a.a = b.b;
a | b
-----+-----
1 | null
2 | null
3 | 3
4 | 4
null | ...
How to generate a random number in C++?
I'm trying to make a gam>me m> with dice, and I need to have random numbers in it (to simulate the sides of the die. I know how to make it between 1 and 6). Using
...
Is there any way to specify a suggested filenam>me m> when using data: URI?
...
Use the download attribute:
<a download='FileNam>me m>' href='your_url'>
Live example on html5-demos.appspot.com/....
The download attribute works on Chrom>me m>, Firefox, Edge, Opera, desktop Safari 10+, iOS Safari 13+, and not IE11.
...
PyLint “Unable to import” error - how to set PYTHONPATH?
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There are two options I'm aware of.
One, change the PYTHONPATH environm>me m>nt variable to include the directory above your module.
Alternatively, edit ~/.pylintrc to include the directory above your module, like this:
[MASTER]
init-hook='import sys; sys.path.append("/path/to/root")'
(Or in oth...
Do you get charged for a 'stopped' instance on EC2? [closed]
...
No.
You get charged for:
Online tim>me m>
Storage space (assumably you store the image on S3 [EBS])
Elastic IP addresses
Bandwidth
So... if you stop the EC2 instance you will only have to pay for the storage of the image on S3 (assuming you store an image ofcou...
How to Compare Flags in C#?
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In .NET 4 there is a new m>me m>thod Enum.HasFlag. This allows you to write:
if ( testItem.HasFlag( FlagTest.Flag1 ) )
{
// Do Stuff
}
which is much more readable, IMO.
The .NET source indicates that this performs the sam>me m> logic as the accepted an...
Get a filtered list of files in a directory
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import glob
jpgFilenam>me m>sList = glob.glob('145592*.jpg')
See glob in python docum>me m>nttion
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how do i block or restrict special characters from input fields with jquery?
... It doesn't works in latest firefox brower, but working fine in chrom>me m>
– Phoenix
Dec 31 '18 at 11:57
This solut...
How to send a JSON object over Request with Android?
...e for sending and receiving HTTP, you can use standard Java code. I'd recomm>me m>nd using the Apache HTTP client, which com>me m>s with Android. Here's a snippet of code I used to send an HTTP POST.
I don't understand what sending the object in a variable nam>me m>d "jason" has to do with anything. If you're not...
What's the difference between isset() and array_key_exists()? [duplicate]
...always advocate only using isset() because I think that NULL should always m>me m>an exactly the sam>me m> as NO VALUE or NOT SET, to avoid ambiguousness.
– jgivoni
Mar 27 '12 at 9:50
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