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Is there any performance gain in indexing a boolean field?

...udes a WHERE isok=1 . As the name implies, isok is a boolean field (actually a TINYINT(1) UNSIGNED that is set to 0 or 1 as needed). ...
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How to store a list in a column of a database table

...ts in another table, I'd have to sort them every time I accessed them. Finally, the list is basically atomic in that any time I wish to access the list, I will want to access the entire list rather than just a piece of it - so it seems silly to have to issue a database query to gather together piec...
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Simple explanation of clojure protocols

...eployed, separately type checked. We want them to be type-safe. [Note: not all of these make sense in all languages. But, for example, the goal to have them type-safe makes sense even in a language like Clojure. Just because we can't statically check type-safety doesn't mean that we want our code to...
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how do I work around log4net keeping changing publickeytoken

...em with the other answers are that they are using the same dll version for all bindings. I want to use features in the new version for everything else but the legacy dependency. To be able to do that you need to do the following: Start by downloading the old version (version of 1.2.11.0). Rename...
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How can I split a text into sentences?

...sentence_terminator in sentence_terminators: t_indices = list(find_all(paragraph, sentence_terminator)) possible_endings.extend(([] if not len(t_indices) else [[i, len(sentence_terminator)] for i in t_indices])) for contraction in contractions: c_indices = list(find_all(p...
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What is the best comment in source code you have ever encountered? [closed]

...ents, code poetry and little jokes into most of my projects (although I usually have enough sense to remove anything directly offensive before releasing the code). Here's one I'm particulary fond of, placed far, far down a poorly-designed 'God Object': /** * For the brave souls who get this far: Yo...
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Pairs from single list

...e=2): it = iter(t) return izip(*[it]*size) When you want to pair all elements you obviously might need a fillvalue: from itertools import izip_longest def blockwise(t, size=2, fillvalue=None): it = iter(t) return izip_longest(*[it]*size, fillvalue=fillvalue) ...
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Trim spaces from start and end of string

... Note: As of 2015, all major browsers (including IE>=9) support String.prototype.trim(). This means that for most use cases simply doing str.trim() is the best way of achieving what the question asks. Steven Levithan analyzed many differ...
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CSS text-overflow in a table cell?

...d flexibility. Also, the containing table will need a specific width, typically width: 100%;, and the columns will typically have their width set as percentage of the total width table {width: 100%;} td { max-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } td.column_a...
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Application Skeleton to support multiple screens

...d Screen-size so while developing an Application which support multiple (small and big) screen there is an obstacle of size and layout. ...