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Postgresql - change the size of a varchar column to lower length
...ttp://www.postgresql.org/message-id/162867790801110710g3c686010qcdd852e721e7a559@mail.gmail.com
CREATE TABLE foog(a varchar(10));
ALTER TABLE foog ALTER COLUMN a TYPE varchar(30);
postgres=# \d foog
Table "public.foog"
Column | Type | Modifiers
--------+-----------------------...
How do I format a string using a dictionary in python-3.x?
...yntax, available since Python 3.6:
>>> geopoint = {'latitude':41.123,'longitude':71.091}
>>> print(f'{geopoint["latitude"]} {geopoint["longitude"]}')
41.123 71.091
Note the outer single quotes and inner double quotes (you could also do it the other way around).
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Replacement for “rename” in dplyr
...ew
disp 0x108b4b0e0 0x108b4e370
hp 0x108b4b210 0x108b4e4a0
drat 0x108b4b340 0x108b4e5d0
wt 0x108b4b470 0x108b4e700
qsec 0x108b4b5a0 0x108b4e830
vs 0x108b4b6d0 0x108b4e960
am 0x108b4b800 0x108b4ea90
gear 0x108b4b930 0x108b4ebc0
carb 0x108b4...
How to get the data-id attribute?
...
To get the contents of the attribute data-id (like in <a data-id="123">link</a>) you have to use
$(this).attr("data-id") // will return the string "123"
or .data() (if you use newer jQuery >= 1.4.3)
$(this).data("id") // will return the number 123
and the part after data- ...
Modify tick label text
...text.Text object at 0x53a73d0>, <matplotlib.text.Text object at 0x53a7a50>,
<matplotlib.text.Text object at 0x53aa110>, <matplotlib.text.Text object at 0x53aa790>]
>>> plt.show()
and the result:
and now if you check the _xticklabels, they are no longer a bunch of '...
node.js hash string?
... require('sha1');
var hash = sha1("my message");
console.log(hash); // 104ab42f1193c336aa2cf08a2c946d5c6fd0fcdb
or
$ npm install md5
and then
var md5 = require('md5');
var hash = md5("my message");
console.log(hash); // 8ba6c19dc1def5702ff5acbf2aeea5aa
(MD5 is insecure but often used by ...
Comma separator for numbers in R?
...rn a vector of characters. I'd only use that for printing.
> prettyNum(12345.678,big.mark=",",scientific=FALSE)
[1] "12,345.68"
> format(12345.678,big.mark=",",scientific=FALSE)
[1] "12,345.68"
EDIT: As Michael Chirico says in the comment:
Be aware that these have the side effect of padd...
jquery data selector
..., and then select using that attribute:
var elm = $('a').attr('data-test',123); //assign 123 using attr()
elm = $("a[data-test=123]"); //select elm using attribute
and now for that elm, both attr() and data() will yield 123:
console.log(elm.attr('data-test')); //123
console.log(elm.data('test'))...
How to generate a number of most distinctive colors in R?
...equire(RColorBrewer)
brewer.pal(9, "Set1")
# [1] "#E41A1C" "#377EB8" "#4DAF4A" "#984EA3" "#FF7F00" "#FFFF33" "#A65628" "#F781BF"
# [9] "#999999"
Look at RColorBrewer package for other available palettes. Hope this helps.
s...
How to get the client IP address in PHP [duplicate]
...answered Oct 8 '14 at 16:20
josh123a123josh123a123
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