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How to get a DOM Element from a JQuery Selector
...bly hard time finding out to get the actual DOMElement from a jquery selector. Sample Code:
4 Answers
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Validate uniqueness of multiple columns
Is there a rails-way way to validate that an actual record is unique and not just a column? For example, a friendship model / table should not be able to have multiple identical records like:
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How to print a string in fixed width?
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EDIT 2013-12-11 - This answer is very old. It is still valid and correct, but people looking at this should prefer the new format syntax.
You can use string formatting like this:
>>> print '%5s' % 'aa'
aa
>>> print '%5s' % 'aaa'
aaa
>>> print '%5s' % 'aaaa'...
How do you represent a graph in Haskell?
It's easy enough to represent a tree or list in haskell using algebraic data types. But how would you go about typographically representing a graph? It seems that you need to have pointers. I'm guessing you could have something like
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How to check if all of the following items are in a list?
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Operators like <= in Python are generally not overriden to mean something significantly different than "less than or equal to". It's unusual for the standard library does this--it smells like legacy API to me.
Use the equivale...
Get jQuery version from inspecting the jQuery object
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You can use either $().jquery; or $.fn.jquery which will return a string containing the version number, e.g. 1.6.2.
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TypeError: unhashable type: 'dict'
This piece of code is giving me an error unhashable type: dict can anyone explain me what is the solution
2 Answers
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DateTime.Now vs. DateTime.UtcNow
... been wondering what exactly are the principles of how the two properties work. I know the second one is universal and basically doesn't deal with time zones, but can someone explain in detail how they work and which one should be used in what scenario?
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What is a memory fence?
What is meant by using an explicit memory fence?
4 Answers
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Remove URL parameters without refreshing page
...t URL and add / inject it (the new modified URL) as a new URL entry to history list, use pushState:
window.history.pushState({}, document.title, "/" + "my-new-url.html");
2- To replace current URL without adding it to history entries, use replaceState:
window.history.replaceState({}, document.ti...