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Prefer composition over inheritance?
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GishuGishu
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[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
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//判断字符串是否是某种类型
CString sValue("123.1");
COleVariant vValue(sValue);
BOOL bStrIsFloat = (SUCCEEDED(VariantChangeType(&vValue, &vValue, 0, VT_R8)) && sValue.Find('.') != -1);
if(bStrIsFloat)
{
AfxMes...
How to start two threads at “exactly” the same time
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To start the threads at exactly the same time (at least as good as possible), you can use a CyclicBarrier:
// We want to start just 2 threads at the same time, but let's control that
// timing from the main thread. That's why we have 3 "parties" instead of 2.
final CyclicBarrier gate = new ...
How does a language expand itself? [closed]
...it has many many layers, from the inner core of pure hardware to the outermost application layer. Each layer exposes parts of itself to the next outer layer, so that the outer layer may use some of the inner layers functionality.
In the case of e.g. Windows the operating system exposes the so-calle...
What's the difference between interface and @interface in java?
...above annotation, you could use code like this:
@MyAnnotation(
value="123",
name="Jakob",
age=37,
newNames={"Jenkov", "Peterson"}
)
public class MyClass {
}
Reference - http://tutorials.jenkov.com/java/annotations.html
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How many constructor arguments is too many?
...hSurname("Smith")
.withFirstName("Fred")
.withSsn("123XS1")
.build();
}
}
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When is it appropriate to use UDP instead of TCP? [closed]
...red "reliable", whereas UDP doesn't guarantee anything and packets can be lost. What would be the advantage of transmitting data using UDP in an application rather than over a TCP stream? In what kind of situations would UDP be the better choice, and why?
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Reference assignment operator in PHP, =&
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123
It's not deprecated and is unlikely to be. It's the standard way to, for example, make part of...
Coding in Other (Spoken) Languages
...ce I don't speak a word of that language, stuff could have been called var_123, var_562 or func_333 as well (and probably it would have been easier for me to remember the names or at least to have a chance of spelling them right without copying and pasting). Since this was a short, self-contained sn...
How to return result of a SELECT inside a function in PostgreSQL?
...guity
END
$func$ LANGUAGE plpgsql;
Call:
SELECT * FROM word_frequency(123);
Explanation:
It is much more practical to explicitly define the return type than simply declaring it as record. This way you don't have to provide a column definition list with every function call. RETURNS TABLE is ...