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What is the difference between concurrency and parallelism?
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Concurrency is when two or more tasks can start, run, and complete in overlapping time periods. It doesn't necessarily mean they'll ever both be running at the same instant. For example, multitasking on a single-core machine.
Parallelism is when tasks literally run at the same ti...
What's the best way to put a c-struct in an NSArray?
...ort CoreGraphics structures – you can use it for your own too. I would recommend doing so, as the class is probably lighter weight than NSData for simple data structures.
Simply use an expression like the following:
[NSValue valueWithBytes:&p objCType:@encode(Megapoint)];
And to get the va...
Do you put unit tests in same project or another project?
...10) isn't a con.
Edit: More Info On Build and Shipping
I would further recommend that any automated build process place production and unit tests into different locations. Ideally, the unit test build process only runs if the production code builds, and copies the product files into the unit test...
std::string formatting like sprintf
...ave write access to the underlying buffer (until C++11; see Dietrich Epp's comment). You'll have to do it first in a c-string, then copy it into a std::string:
char buff[100];
snprintf(buff, sizeof(buff), "%s", "Hello");
std::string buffAsStdStr = buff;
But I'm not sure why you wouldn't jus...
How to use HTML to print header and footer on every printed page of a document?
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Simple Digit Recognition OCR in OpenCV-Python
...rposes).
1) My first question was about letter_recognition.data file that comes with OpenCV samples. I wanted to know what is inside that file.
It contains a letter, along with 16 features of that letter.
And this SOF helped me to find it. These 16 features are explained in the paperLetter Recogn...
How and when to use ‘async’ and ‘await’
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When using async and await the compiler generates a state machine in the background.
Here's an example on which I hope I can explain some of the high-level details that are going on:
public async Task MyMethodAsync()
{
Task<int> longRunningTask =...
What's the difference between Ruby's dup and clone methods?
...urce for answers to these questions, since it is quite clear, and a fairly compliant Ruby implementation.
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What is the difference in maven between dependency and plugin tags in pom xml?
...dded to the classpath while executing the tasks.
For example, you use a compiler-plugin to compile the java files. You can't use compiler-plugin as a dependency since that will only add the plugin to the classpath, and will not trigger any compilation. The Jar files to be added to the classpath w...
Conditionally use 32/64 bit reference when building in Visual Studio
...64 for the $(PROCESSOR_ARCHITECTURE), but would definitely like to have as complete and thorough information as possible.
– Hugo
Feb 4 '13 at 22:49
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