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psql: FATAL: Ident authentication failed for user “postgres”
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The following steps work for a fresh install of postgres 9.1 on Ubuntu 12.04. (Worked for postgres 9.3.9 on Ubuntu 14.04 too.)
By default, postgres creates a user named 'postgres'. We log in as her, and give her a password.
$ sudo -u postgres psql
\password
Enter password: ...
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Logout of psq...
How to subtract date/time in JavaScript? [duplicate]
...60/24 === 4
– pawel
Jan 7 '19 at 13:04
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How to round up to the nearest 10 (or 100 or X)?
... vector:
> roundUp(c(0.0023, 3.99, 10, 1003))
[1] 1e-02 1e+01 1e+01 1e+04
..but if you want to round to a "nice" number, you first need to define what a "nice" number is. The following lets us define "nice" as a vector with nice base values from 1 to 10. The default is set to the even numbers ...
Python Image Library fails with message “decoder JPEG not available” - PIL
...n recompile pillow. It also seems that libjpeg8-dev is needed on Ubuntu 14.04
If you're still using PIL then you should really be using pillow these days though, so first pip uninstall PIL before following these instructions to switch, or if you have a good reason for sticking with PIL then replace...
How to set variable from a SQL query?
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OMG PoniesOMG Ponies
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How to import JsonConvert in C# application?
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– Mauricio Gracia Gutierrez
Jun 12 '18 at 11:04
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Ternary operator is twice as slow as an if-else block?
...n array)
0000007c 33 D2 xor edx,edx
0000007e 83 7E 04 00 cmp dword ptr [esi+4],0
00000082 7E 1C jle 000000A0
00000084 8B 44 96 08 mov eax,dword ptr [esi+edx*4+8]
33: {
34: ...
Pip install Matplotlib error with virtualenv
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I actually have libfreetype6-dev intalled on ubuntu 14.04. Matplotlib seems not to be picking it.
– tutuca
Aug 6 '14 at 4:19
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LINQ with groupby and count
...01/2011 5 | 1
jane 0 01/02/2011 9 | 0
john 2 01/03/2011 0 | 2
jim 3 01/04/2011 1 | 3
jean 1 01/05/2011 3 | 1
jill 2 01/06/2011 5 | 2
jeb 0 01/07/2011 3 | 0
jenn 0 01/08/2011 7 | 0
it would result in the following result after the groupby:
(Group 1): [joe 1 01/01/2011 5, jean 1 01/05/2011...
Jackson: how to prevent field serialization
... Biju KunjummenBiju Kunjummen
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