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Why would I ever use push_back instead of emplace_back?
C++11 vectors have the new function emplace_back . Unlike push_back , which relies on compiler optimizations to avoid copies, emplace_back uses perfect forwarding to send the arguments directly to the constructor to create an object in-place. It seems to me that emplace_back does everything p...
What is exactly the base pointer and stack pointer? To what do they point?
...out Windows programs, you might probably use Visual Studio to compile your C++ code. Be aware that Microsoft uses an optimization called Frame Pointer Omission, that makes it nearly impossible to do walk the stack without using the dbghlp library and the PDB file for the executable.
This Frame Poin...
How to erase the file contents of text file in Python?
...e:
f = open('file.txt', 'r+')
f.truncate(0) # need '0' when using r+
In C++, you could use something similar.
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Why does an overridden function in the derived class hide other overloads of the base class?
...e rationale behind the name hiding, i.e. why it actually was designed into C++, is to avoid certain counterintuitive, unforeseen and potentially dangerous behavior that might take place if the inherited set of overloaded functions were allowed to mix with the current set of overloads in the given cl...
How to determine the Boost version on a system?
Is there a quick way to determine the version of the Boost C++ libraries on a system?
11 Answers
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How do I drop a foreign key in SQL Server?
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I think this will helpful to you...
DECLARE @ConstraintName nvarchar(200)
SELECT
@ConstraintName = KCU.CONSTRAINT_NAME
FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS AS RC
INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE AS KCU
ON KCU.CONSTRAINT_CATALOG = RC.CONSTRAINT_CATALOG
A...
What is the opposite of 'parse'? [closed]
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200
votes
I think the verb you want is 'compose'.
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get string value from UISegmentedControl
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200
Objective-C
NSString *title = [segment titleForSegmentAtIndex:segment.selectedSegmentIndex];
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Is there a way to find/replace across an entire project in Eclipse?
...5
nosnos
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What are the allowed tags inside a ?
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200
TL;DR: an <li> can contain any element that is valid in <body>.
In the HTML 4.01 ...