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How do you check in python whether a string contains only numbers?
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You can use try catch block here:
s="1234"
try:
num=int(s)
print "S contains only digits"
except:
print "S doesn't contain digits ONLY"
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GSON - Date format
...ate format.
Ordinarily, I don't think it's good practice to use try/catch blocks, but this should be a fairly rare case.
How to center absolute div horizontally using CSS?
...ffset to the [left/right] of the [right/left] edge of the box's containing block.
Source:
http://www.w3.org/TR/CSS2/visuren.html#position-props
Note: The element must have a width smaller than the window or else it will take up the entire width of the window.
If you could use media querie...
What purpose does a tag serve inside of a tag?
... interesting design and content. One of those websites, Squarespace , has blocks of <script> tags inside of a <noscript> tag, like so:
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How to test if parameters exist in rails
...whether or not both parameters are set, the first part of the following if block gets triggered. How can I make this part ONLY get triggered if both params[:one] and params[:two] is set?
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使用 XML 和 Web 服务 · App Inventor 2 中文网
...g:hover { color: #3773f5 } .feedback-pop .feedback-img { display: inline-block; width: 24px; height: 24px; margin-bottom: 4px; background: url(/static/images/feedback.svg) 50% / 100% auto no-repeat; } /*手机版：反馈浮动按钮收小*/ @media screen and (max-width: 700px) { .feedback-po...
How can I redirect the output of the “time” command?
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no need to launch sub shell. Use a code block will do as well.
{ time ls; } 2> out.txt
or
{ time ls > /dev/null 2>&1 ; } 2> out.txt
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im...
Regex Match all characters between two strings
... Is there a way to deal with repeated instances of this split in a block of text? FOr instance: "This is just\na simple sentence. Here is some additional stuff. This is just\na simple sentence. And here is some more stuff. This is just\na simple sentence. ". Currently it matches the entir...
How often to commit changes to source control? [closed]
...t validate your checkin - people will be knocking on your door because you blocked them.
– Alex Weinstein
Sep 21 '08 at 4:38
58
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All Ruby tests raising: undefined method `authenticate' for nil:NilClass
... can just explicitly include those helpers in that one controller describe block:
require 'spec_helper'
describe MyCoolController
include Devise::TestHelpers
it { }
end
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