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Find XOR of all numbers in a given range
You are given a large range [a,b] where 'a' and 'b' can be typically between 1 and 4,000,000,000 inclusive. You have to find out the XOR of all the numbers in the given range.
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Does svn have a `revert-all` command?
If I want to throw away all of my changes, and return to the code that is on the repository, I do the following:
4 Answers
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What is a 'Closure'?
... scope
When you declare a local variable, that variable has a scope. Generally, local variables exist only within the block or function in which you declare them.
function() {
var a = 1;
console.log(a); // works
}
console.log(a); // fails
If I try to access a local variable, most languag...
Git add and commit in one command
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is an easy way to tell git to delete files you have deleted, but I generally don't recommend such catch-all workflows. Git commits should in best practice be fairly atomic and only affect a few files.
git add .
git commit -m "message"
is an easy way to add all files new or modified. Also, the ...
ASP.NET MVC ambiguous action methods
I have two action methods that are conflicting. Basically, I want to be able to get to the same view using two different routes, either by an item's ID or by the item's name and its parent's (items can have the same name across different parents). A search term can be used to filter the list.
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How to deny access to a file in .htaccess
...nes from the parent).
So you can have:
<Files "log.txt">
Order Allow,Deny
Deny from all
</Files>
For Apache 2.4+, you'd use:
<Files "log.txt">
Require all denied
</Files>
In an htaccess file in your inscription directory. Or you can use mod_rewrite to sort of...
How do you find the sum of all the numbers in an array in Java?
I'm having a problem finding the sum of all of the integers in an array in Java. I cannot find any useful method in the Math class for this.
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URL rewriting with PHP
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You can essentially do this 2 ways:
The .htaccess route with mod_rewrite
Add a file called .htaccess in your root folder, and add something like this:
RewriteEngine on
RewriteRule ^/?Some-text-goes-here/([0-9]+)$ /picture.php?id=$1
Thi...
Clear back stack using fragments
...tBackStackEntryCount(); ++i) {
fm.popBackStack();
}
But could equally have used something like:
((AppCompatActivity)getContext()).getSupportFragmentManager().popBackStack(String name, FragmentManager.POP_BACK_STACK_INCLUSIVE)
Which will pop all states up to the named one. You can then j...
Response.Redirect with POST instead of Get?
...that first executes an AJAX request to your server with the data, and then allows the form to be submitted to the third-party server.
Create the form to post to your server. When the form is submitted, show the user a page that has a form in it with all of the data you want to pass on, all in hidde...