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What is the python “with” statement designed for?
...with" statement
1.
The with statement is used to wrap the execution of a block with methods defined by a context manager. This allows common try...except...finally usage patterns to be encapsulated for convenient reuse.
2.
You could do something like:
with open("foo.txt") as foo_file:
data =...
Rails: fields_for with index?
...def fields_for(record_name, record_object = nil, fields_options = {}, &block)
fields_options, record_object = record_object, nil if record_object.is_a?(Hash) && record_object.extractable_options?
fields_options[:builder] ||= options[:builder]
fields_options[:paren...
How to change CSS using jQuery?
... 'font-size': '32px',
'text-align' : 'center',
'display' : 'inline-block'
});
This will change all of these CSS properties on the ‘.example’ elements.
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Implications of foldr vs. foldl (or foldl')
...:Util::reduce, C++'s accumulate, C#'s Aggregate, Smalltalk's inject:into:, PHP's array_reduce, Mathematica's Fold, etc. Common Lisp's reduce defaults to left fold but there's an option for right fold.
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...
Using :after to clear floating elements
...
Write like this:
.wrapper:after {
content: '';
display: block;
clear: both;
}
Check this http://jsfiddle.net/EyNnk/1/
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f...
Redirect from an HTML page
...SEO people:
<link rel="canonical" href="http://www.example.com/product.php?item=swedish-fish"/>
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follow
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...
Lock, mutex, semaphore… what's the difference?
... acquire()/release() operations, both cause zero or more threads to become blocked/suspected...
Really, the crucial difference lies solely on how they lock and unlock.
A lock (or mutex) has two states (0 or 1). It can be either unlocked or locked. They're often used to ensure only one thread ente...
Passing data to a closure in Laravel 4
...om('info@website.com', 'Sender');
});
Note: The function being used is a PHP Closure (anonymous function) It is not exclusive to Laravel.
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foll...
Div height 100% and expands to fit content
...
Here is what you should do in the CSS style, on the main div
display: block;
overflow: auto;
And do not touch height
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follow
...
pass post data with window.location.href
...
$("#btn_id").click(function(){
$.redirect(http://localhost/test/test1.php,
{
user_name: "khan",
city : "Meerut",
country : "country"
});
});
});
see https://github.com/mgalante/jquery.redirect
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