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How to generate unique ID with node.js
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Install NPM uuid package (sources: https://github.com/kelektiv/node-uuid):
npm install uuid
and use it in your code:
var uuid = require('uuid');
Then create some ids ...
// Generate a v1 (time-based) id
uuid.v1(); // -> '6c84fb90-12c4-11e1-840d-7b25c...
Why Maven uses JDK 1.6 but my java -version is 1.7
...o handle JDK versions on MacOS is by using the script described at: http://www.jayway.com/2014/01/15/how-to-switch-jdk-version-on-mac-os-x-maverick/
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How can I nullify css property?
...o:
.c1 {
height: auto;
}
You should search for each property here:
https://developer.mozilla.org/en-US/docs/Web/CSS/Reference
For example, height:
Initial value : auto
Another example, max-height:
Initial value : none
In 2017, there is now another way, the unset keyword:
.c1 ...
Stop node.js program from command line
...o end gracefully, unbinding from any ports it is listening on.
See also: https://superuser.com/a/262948/48624
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How to check if a number is a power of 2
...ndaddy of them, the book "Hacker's Delight" by Henry Warren, Jr.:
http://www.hackersdelight.org/
As Sean Anderson's page explains, the expression ((x & (x - 1)) == 0) incorrectly indicates that 0 is a power of 2. He suggests to use:
(!(x & (x - 1)) && x)
to correct that probl...
Cookies vs. sessions
...es the browser, use sessions.
Rule 4. Read the detailed answer!
Source : https://www.lucidar.me/en/web-dev/sessions-or-cookies/
Detailed answer
Cookies
Cookies are stored on the client side (in the visitor's browser).
Cookies are not safe: it's quite easy to read and write cookie contents.
W...
In Python, how do I indicate I'm overriding a method?
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Based on this and fwc:s answer I created a pip installable package https://github.com/mkorpela/overrides
From time to time I end up here looking at this question.
Mainly this happens after (again) seeing the same bug in our code base: Someone has forgotten some "interface" implementing clas...
How to resize images proportionally / keeping the aspect ratio?
...ax-height to 100%.
<div style="height: 100px">
<img src="http://www.getdigital.de/images/produkte/t4/t4_css_sucks2.jpg"
style="max-height: 100%; max-width: 100%">
</div>
Here's the fiddle: http://jsfiddle.net/9EQ5c/
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change cursor to finger pointer
...ets/imgs/theGoods.png');
below is the code:
.cursor{
cursor:url(http://www.icon100.com/up/3772/128/425-hand-pointer.png), auto;
}
So this will only work under the size 128 X 128, any bigger and the image wont load. But you can practically use any image you want! This would be consider pure css...
How can I sort a dictionary by key?
...r key in keylist:
print "%s: %s" % (key, mydict[key])
Source: http://www.saltycrane.com/blog/2007/09/how-to-sort-python-dictionary-by-keys/
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