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JavaScript variables declare outside or inside loop?
... does not have block scope like many other C-like languages.
That is also known as lexical scope.
If you declare something like
var foo = function(){
for(var i = 0; i < 10; i++){
}
};
This gets hoisted to:
var foo = function(){
var i;
for(i = 0; i < 10; i++){
}
}
So ...
Check whether user has a Chrome extension installed
...re you executing the script that uses .connect() from a hosted script? I know Chrome tries hard not to do stuff with just local files that aren't hosted for security purposes. - Just checking.
– JamesEggers
Jun 9 '11 at 14:13
...
“render :nothing => true” returns empty plaintext file?
...
Since Rails 4, head is now preferred over render :nothing.1
head :ok, content_type: "text/html"
# or (equivalent)
head 200, content_type: "text/html"
is preferred over
render nothing: true, status: :ok, content_type: "text/html"
# or (equiva...
How does inline Javascript (in HTML) work?
I know this is bad practice. Don't write code like this if at all possible.
6 Answers
...
Fast permutation -> number -> permutation mapping algorithms
...elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements.
...
Remove URL parameters without refreshing page
...ll/be/deleted/
To become:
https://domain.tld/my-new-url.php
Action
Now let's try a different approach. Say you need to keep the file's name. The file name comes after the last / and before the query string ?.
http://www.someDomain.com/really/long/address/keepThisLastOne.php?name=john
Wil...
What's the difference between “git reset” and “git checkout”?
... (so HEAD points to it) and we run git reset master, 'develop' itself will now point to the same commit that 'master' does.
On the other hand, if we instead run git checkout master, 'develop' will not move, HEAD itself will. HEAD will now point to 'master'.
So, in both cases we're moving ...
How many characters can UTF-8 encode?
...7,483,648 characters
However, RFC 3629 restricted the possible values, so now we're capped at 4 bytes, which gives us
221 = 2,097,152 characters
Note that a good chunk of those characters are "reserved" for custom use, which is actually pretty handy for icon-fonts.
* Wikipedia used show a table ...
How do I move forward and backward between commits in git?
...am doing a git bisect and after arriving to the problematic commit, I am now trying to get a step forward/backward to make sure I am in the right one.
...
Differences between strong and weak in Objective-C
...
Great details. I think I didn't really get it until now. Thank you.
– ahmedalkaff
Aug 20 '13 at 20:11
1
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