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What is the correct way of using C++11's range-based for?
...ile.
g++ outputs an error message something like this:
TestRangeFor.cpp:138:11: error: assignment of read-only reference 'x'
x *= 10;
^
The correct approach in this case is capturing by non-const reference:
vector<int> v = {1, 3, 5, 7, 9};
for (auto& x : v)
...
angular.service vs angular.factory
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138
TL;DR
1) When you’re using a Factory you create an object, add properties to it, then retur...
How is the fork/join framework better than a thread pool?
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138
I think the basic misunderstanding is, that the Fork/Join examples do NOT show work stealing b...
Android Min SDK Version vs. Target SDK Version
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138
android:minSdkVersion
An integer designating the minimum API Level required for the appli...
Separate Back Stack for each tab in Android using Fragments
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138
I am terribly late to this question . But since this thread has been very informative and help...
Cartesian product of x and y array points into single array of 2D points
...tests.)
In [5]: test_cartesian(*(x100 * 3))
cartesian_product:
8.8 ms ± 138 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
cartesian_product_transpose:
7.87 ms ± 91.5 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
cartesian_product_itertools:
518 ms ± 5.5 ms per loop (me...
JavaScript + Unicode regexes
...BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F5\u13F8-\u13FD\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16F1-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-...
Fastest way to iterate over all the chars in a String
... 3.2 3.3 3.9 4.0
128 charAt 2.1 1.9 43.7 138.8 2.1 2.6 2.6 2.4 2.6
256 charAt 1.9 1.6 42.4 90.6 1.7 2.1 2.1 1.7 1.8
512 field1 1.7 1.4 40.6 60.5 1.4 1.9 1.9 1.3 1...
How do I achieve the theoretical maximum of 4 FLOPs per cycle?
...oretical AVX peak is 8 flops * 4 cores * 4.4 GHz = 140.8 GFlops. Actual is 138.2 GFlops.
Now for some explanations:
The performance critical part is obviously the 48 instructions inside the inner loop. You'll notice that it's broken into 4 blocks of 12 instructions each. Each of these 12 instruc...
Where and why do I have to put the “template” and “typename” keywords?
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138
C++11
Problem
While the rules in C++03 about when you need typename and template are largely...