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Finding the type of an object in C++
...t, B. I am overriding a function that accepts an object of type A as a parameter, so I have to accept an A. However, I later call functions that only B has, so I want to return false and not proceed if the object passed is not of type B.
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How to retrieve the hash for the current commit in Git?
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--verify implies that: The parameter given must be usable as a single, valid object name. Otherwise barf and abort.
– Linus Unnebäck
Jul 24 '11 at 17:50
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Python SQL query string formatting
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Sorry for posting to such an old thread -- but as someone who also shares a passion for pythonic 'best', I thought I'd share our solution.
The solution is to build SQL statements using python's String Literal Concatenation (http://docs.python.org/), which could be qualified a...
Vim: insert the same characters across multiple lines
Sometimes I want to edit a certain visual block of text across multiple lines.
12 Answers
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How to split one string into multiple variables in bash shell? [duplicate]
... and write, is a very slow solution because forces you to read twice the same data ($STR) ... if you care of your script performace, the @anubhava solution is much better
– FSp
Nov 27 '12 at 10:26
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Regex lookahead, lookbehind and atomic groups
... in my regex body but I haven't got a clue what I can use them for.
Does somebody have examples so I can try to understand how they work?
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Best way to add “current” class to nav in Rails 3
I have some static pages in a navigation menu. I want to add a class like "current" to the item which is currently displaying.
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Save the console.log in Chrome to a file
Does anyone know of a way to save the console.log output in Chrome to a file? Or how to copy the text out of the console?
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Finding ALL duplicate rows, including “elements with smaller subscripts”
R's duplicated returns a vector showing whether each element of a vector or data frame is a duplicate of an element with a smaller subscript. So if rows 3, 4, and 5 of a 5-row data frame are the same, duplicated will give me the vector
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Android get free size of internal/external memory
I want to get the size of free memory on internal/external storage of my device programmatically. I'm using this piece of code :
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