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How to design a product table for many kinds of product where each product has many parameters
...stead, one table per product type, storing both common product attributes, and product-specific attributes.
Serialized LOB: One table for Products, storing attributes common to all product types. One extra column stores a BLOB of semi-structured data, in XML, YAML, JSON, or some other format. This...
How to force NSLocalizedString to use a specific language
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NSLocalizedString() (and variants thereof) access the "AppleLanguages" key in NSUserDefaults to determine what the user's settings for preferred languages are. This returns an array of language codes, with the first one being the one set by the ...
Using union and order by clause in mysql
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select 3 as Rank, id, add_date from Table where distance between 5 and 15
) a
order by rank, id, add_date desc
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Rearranging Tab Bar Controller Order in StoryBoard
... relationship in the StoryBoard graphically? I can't find a way to do this and I'm sure I must be missing something!
18 Ans...
How to grep for two words existing on the same line? [duplicate]
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grep "word1" FILE will print all lines that have word1 in them from FILE, and then grep "word2" will print the lines that have word2 in them. Hence, if you combine these using a pipe, it will show lines containing both word1 and word2.
If you just want a count of how many lines had the 2 words on ...
ImportError: No module named Crypto.Cipher
...statement is just from Crypto.Cipher import AES . I looked for duplicates and you might say that there are some, but I tried the solutions (although most are not even solutions) and nothing worked.
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Javascript object Vs JSON
I want to understand the basic differences clearly between Javascript object and JSON string.
5 Answers
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Is there still any reason to learn AWK?
...you move to more exotic systems, knowing a little awk is going to be Real Handy.
awk can also be used for more than just text processing. For example one of my supervisors writes astronomy code in awk - that is how utterly old school and awesome he is. Back in his days, it was the best tool for the...
How are the points in CSS specificity calculated
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Pekka's answer is practically correct, and probably the best way to think about the issue.
However, as many have already pointed out, the W3C CSS recommendation states that "Concatenating the three numbers a-b-c (in a number system with a large base) gives the sp...
Auto-expanding layout with Qt-Designer
... of your widget/dialog/window (not the QVBoxLayout, but the parent widget) and select Lay Out -> Lay Out in a Grid from the bottom of the context-menu. The QVBoxLayout should now stretch to fit the window and will resize automatically when the entire window is resized.
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