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What does the regular expression /_/g mean?
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The regex matches the _ character.
The g means Global, and causes the replace call to replace all matches, not just the first one.
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binning data in python with scipy/numpy
... to bin start and end positions in that array, and I want to just take the mean in those bins? I have code that does it below but i am wondering how it can be cut down and improved. thanks.
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Database Design for Tagging
...ype of the database limits you to a specific number of bits. This does not mean each item is limited to a certain number of tags, but that there can only be a certain number of unique tags in the whole system (usually up to 32 or 64).
– Mark Renouf
Jun 29 '09 a...
How to create a checkbox with a clickable label?
How can I create an HTML checkbox with a label that is clickable (this means that clicking on the label turns the checkbox on/off)?
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Which regular expression operator means 'Don't' match this character?
*, ?, + characters all mean match this character. Which character means 'don't' match this? Examples would help.
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Is a one column table good design? [closed]
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In terms of relational algebra this would be a unary relation, meaning "this thing exists"
Yes, it's fine to have a table defining such a relation: for instance, to define a domain.
The values of such a table should be natural primary keys of course.
A lookup table of prime numbers is...
How to do constructor chaining in C#
...ult arguments are set at compile time in the caller, not the callee. That means if you deploy code like this in a library and an application uses a constructor with default args; you need a re-compile of the application using the library if the default arguments change. Some people consider defaul...
How to pull a random record using Django's ORM?
...slated to SELECT ... FROM ... WHERE ... ORDER BY RAND() LIMIT N query.
It means that for every row in table the RAND() function will be executed, then the whole table will be sorted according to value of this function and then first N records will be returned. If your tables are small, this is fine...
What is the meaning of “vnd” in MIME types?
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vnd indicates vendor-specific MIME types, which means they are MIME types that were introduced by corporate bodies rather than e.g. an Internet consortium.
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Why does MYSQL higher LIMIT offset slow the query down?
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@harald: what exactly do you mean by "not work"? This is a pure performance improvement. If there is no index usable by ORDER BY or the index covers all fields you need, you don't need this workaround.
– Quassnoi
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