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Fast permutation -> number -> permutation mapping algorithms
...ccurs exactly once in this representation.
Applying a permutation in this form is easy:
int[] permutation = new int[] { 1, 3, 0, 4, 2 };
char[] list = new char[] { 'a', 'b', 'c', 'd', 'e' };
char[] permuted = new char[n];
for (int i = 0; i < n; i++)
{
permuted[permutation[i]] = list[i];
}...
What does “Mass Assignment” mean in Laravel?
... value. In theory, if you used the above code, someone could inject into a form a new field for user_type and send 'admin' along with the other form data, and easily switch their account to an admin account... bad news.
By adding:
$fillable = ['name', 'password', 'email'];
You are ensuring that ...
Html attributes for EditorFor() in ASP.NET MVC
...
@Html.EditorFor(model => model, new { htmlAttributes = new { @class = "form-control" }, })
http://www.asp.net/mvc/overview/releases/mvc51-release-notes#new-features
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Hard reset of a single file
...hat @ is short for HEAD. An older version of git may not support the short form.
Reset to index:
To hard reset a single file to the index, assuming the index is non-empty, otherwise to HEAD:
git checkout -- myfile.ext
The point is that to be safe, you don't want to leave out @ or HEAD from the ...
Why should we include ttf, eot, woff, svg,… in a font-face
...
Only use WOFF2, or if you need legacy support, WOFF. Do not use any other format
(svg and eot are dead formats, ttf and otf are full system fonts, and should not be used for web purposes)
Original answer from 2012:
In short, font-face is very old, but only recently has been supported by more tha...
How to find out what character key is pressed?
...h;
}
alert(String.fromCharCode(keynum));
}
</script>
<form>
<input type="text" onkeypress="return myKeyPress(event)" />
</form>
JQuery:
$(document).keypress(function(event){
alert(String.fromCharCode(event.which));
});
...
How to remove duplicate white spaces in string using Java?
... a regular expression. \s matches a space, tab, new line, carriage return, form feed or vertical tab, and + says "one or more of those". Thus the above code will collapse all "whitespace substrings" longer than one character, with a single space character.
Source: Java: Removing duplicate white s...
How to use Greek symbols in ggplot2?
...also works in places where expression does not work, and even allows other formatting like italics, bold etc.
– Sam
Apr 1 '16 at 14:13
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Can jQuery read/write cookies to a browser?
...ee http://www.stilbuero.de/2006/09/17/cookie-plugin-for-jquery/ for more information on the JQuery cookie plugin.
If you want to set cookies that are used for the entire site, you'll need to use JavaScript like this:
document.cookie = "name=value; expires=date; domain=domain; path=path; secure"
...
Django CharField vs TextField
...pecified with a maximum length, and might be more efficient in terms of performance or storage — and text (or similar) types — those are usually limited only by hardcoded implementation limits (not a DB schema).
PostgreSQL 9, specifically, states that "There is no performance difference among t...