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Does every Core Data Relationship have to have an Inverse?
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An inverse relationship doesn't just
make things more tidy, it's actually
used by Core Data to maintain data
integrity.
-- Cocoa Dev Central
You should typically model
relationships in both directions, and
specify the inverse relationships
appropriately. Core Data uses this
i...
What is the difference between a regular string and a verbatim string?
... = @"C:\myfolder\myfile.txt";
The @ symbol means to read that string literally, and don't interpret control characters otherwise.
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d3 axis labeling
...eet to style these labels as you like, either together (.label) or individually (.x.label, .y.label).
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Embedding Python in an iPhone app
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It doesn't really matter how you build Python -- you don't need to build it in Xcode, for example -- but what does matter is the product of that build.
Namely, you are going to need to build something like libPython.a that can be statica...
How to make a HTML Page in A4 paper size page(s)?
...e the margins as you want them to be. */
}
}
In case you think you really need pixels (you should actually avoid using pixels), you will have to take care of choosing the correct DPI for printing:
72 dpi (web) = 595 X 842 pixels
300 dpi (print) = 2480 X 3508 pixels
600 dpi (high quality prin...
How to reload apache configuration for a site without restarting apache
I have edited the variable AllowOverride for one of my websites in sites-enabled directory. How do I reload the new configuration without restarting apache? Is it possible?
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What does “javascript:void(0)” mean?
...rator is often used merely
to obtain the undefined primitive
value, usually using “void(0)” (which
is equivalent to “void 0”). In these
cases, the global variable undefined
can be used instead (assuming it has
not been assigned to a non-default
value).
An explanation is provi...
How to compare two colors for similarity/difference
...d with what percentage. The thing is that I don't know how to do that manually step by step. So it is even more difficult to think of a program.
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What is “above-the-fold content” in Google Pagespeed?
...ery string from web fonts. I was very happy with this as this represented all that I could do.
4 Answers
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Check if a string contains a string in C++
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Actually, you can try to use boost library,I think std::string doesn't supply enough method to do all the common string operation.In boost,you can just use the boost::algorithm::contains:
#include <string>
#include <boo...