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Transferring an app to another Firebase account
...
worked like a charm :) I wanted to add a new owner in order to switch google play account linked with Firebase project.
– Wahib Ul Haq
Jul 23 '17 at 18:34
7
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How exactly does work?
...ly. If you use defer, you can't rely on the script files being executed in order in some browsers.
– Flimm
Jan 20 '16 at 11:23
2
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How to sort a list/tuple of lists/tuples by the element at a given index?
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In order to sort a list of tuples (<word>, <count>), for count in descending order and word in alphabetical order:
data = [
('betty', 1),
('bought', 1),
('a', 1),
('bit', 1),
('of', 1),
('butter', 2),
('but', 1),
('...
How to convert vector to array
...making a pointer that points to the actual array the vector is using internally. If you want to copy GMan's answer explains how
– Michael Mrozek
May 27 '10 at 17:22
4
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Is there a performance difference between a for loop and a for-each loop?
... iterator or index variable
completely. The resulting idiom
applies equally to collections and
arrays:
// The preferred idiom for iterating over collections and arrays
for (Element e : elements) {
doSomething(e);
}
When you see the colon (:), read it as
“in.” Thus, the loop ab...
How to convert an IPv4 address into a integer in C#?
...igned 32-bit value of the IPv4 address (the catch is, it's in network byte order, so you need to swap it around).
For example, my local google.com is at 64.233.187.99. That's equivalent to:
64*2^24 + 233*2^16 + 187*2^8 + 99
= 1089059683
And indeed, http://1089059683/ works as expected (at least ...
How do I perform the SQL Join equivalent in MongoDB?
...rect. The new $lookup operator added to the aggregation pipeline is essentially identical to a left outer join:
https://docs.mongodb.org/master/reference/operator/aggregation/lookup/#pipe._S_lookup
From the docs:
{
$lookup:
{
from: <collection to join>,
localField: <...
Updating packages in Emacs
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In order to automatically update the list of packages, only if there is no package list already, use the following:
(when (not package-archive-contents)
(package-refresh-contents))
In order to update all installed package...
Rails 2.3-style plugins and deprecation warnings running task in Heroku
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Yep, I realize that all the warnings came from my Heroku scripts and logs. I'll assume that (a) it's the plugin injections and (b) that the Heroku team will fix this before it becomes an actual problem.
– fearless_fool
...
CSS selector for a checked radio button's label
...stify-content: center;
}
.filter-label {
display: inline-block;
border: 4px solid green;
padding: 10px 20px;
font-size: 1.4em;
text-align: center;
cursor: pointer;
}
main {
clear: left;
}
.content {
padding: 3% 10%;
display: none;
}
h1 {
font-size: 2em;
...