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What does “Memory allocated at compile time” really mean?
...piler could do assumptions like "Okay, the array will be at address 0x00A33211". At runtime that addresses are translated to real/hardware addresses by the MMU and OS.
Value initialized static storage things are a bit different. For example:
int array[] = { 1 , 2 , 3 , 4 };
In our first example,...
How can I reliably get an object's address when operator& is overloaded?
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102
Update: in C++11, one may use std::addressof instead of boost::addressof.
Let us first copy t...
How to get screen width without (minus) scrollbar?
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edited Apr 11 '16 at 22:01
answered Dec 1 '11 at 10:54
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Finding diff between current and last version
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How can I count occurrences with groupBy?
...nting()));
System.out.println(counted);
}
}
Result:
{Hello=2, World=1}
(There's also the possibility of using groupingByConcurrent for more efficiency. Something to bear in mind for your real code, if it would be safe in your context.)
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How do you create a transparent demo screen for an Android app?
...000000"
The last 6 digits define the color: 000000 is black.
The first 2 define the opacity: 00 is 100% transparent, ff is 100% opaque. So choose something in between.
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原子vector的一种实现源码(atomic-vector) - C/C++ - 清泛网 - 专注C/C++及内核技术
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Passing a function with parameters as a parameter?
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249
Use a "closure":
$(edit_link).click(function(){ return changeViewMode(myvar); });
This crea...
How do function pointers in C work?
... n+m;
}
First thing, let's define a pointer to a function which receives 2 ints and returns an int:
int (*functionPtr)(int,int);
Now we can safely point to our function:
functionPtr = &addInt;
Now that we have a pointer to the function, let's use it:
int sum = (*functionPtr)(2, 3); // s...