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How to sum up elements of a C++ vector?
...rder: #include <numeric> and std::accumulate(v.begin(), v.end(), (int64_t)0);. Notice that the type of the initial accumulator value is used as the accumulator type, so if you want to sum 8-bit elements into a 64-bit result, that's how you do it.
– Peter Cordes
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How do I change the color of radio buttons?
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Updating from @markreyes: Works in Chrome (64-bit 73.0.3683.75), works somewhat in Safari (12.0.3), and doesn't work in Firefox (64-bit 65.0.1) on March 15 2019.
– jarhill0
Mar 16 '19 at 2:12
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When to use enumerateObjectsUsingBlock vs. for
...ormat:@"%d", i];
}
int i;
__block NSUInteger length;
i = 1000 * 1000;
uint64_t a1 = mach_absolute_time();
while (--i > 0) {
for (NSString *s in arr) {
length = s.length;
}
}
NSLog(@"For-in %llu", mach_absolute_time()-a1);
i = 1000 * 1000;
uint64_t b1 = mach_absolute_time();
whil...
gdb: how to print the current line or find the current line number?
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kumar_m_kirankumar_m_kiran
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How can you check which options vim was compiled with?
...cc -c -I. -D_FORTIFY_SOURCE=0 -Iproto -DHAVE_CONFIG_H -arch i386 -arch x86_64 -g -Os -pipe
Linking: gcc -arch i386 -arch x86_64 -o vim -lncurses
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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
...n your cache. L is always power of 2.
The six comes from fact that 2^6 == 64 bytes is standard size of cache line.
Now what does this mean? Well it means that if I have address X and address Y and
(X >> 6) - (Y >> 6) is divisible by L (i.e. some large power of 2), they will be stored ...
AngularJS changes URLs to “unsafe:” in extension page
... Bob Fanger
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answered Apr 2 '13 at 16:51
Philip BulleyPhilip Bulley
7,86...
绘画动画组件 · App Inventor 2 中文网
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背景图像
指定画布背景图像的文件名称。
背景Base64图像
设置Base64格式的背景图片。这需要 API 级别 >= 8。对于 API 级别低于 8 的设备，设置此选项最终会得到空白背景。
可移动到画布外
确定是否可以移动超出画布边...
.gitignore for Visual Studio Projects and Solutions
...tates
# Build results
[Dd]ebug/
[Dd]ebugPublic/
[Rr]elease/
[Rr]eleases/
x64/
x86/
build/
bld/
[Bb]in/
[Oo]bj/
# Roslyn cache directories
*.ide/
# MSTest test Results
[Tt]est[Rr]esult*/
[Bb]uild[Ll]og.*
#NUNIT
*.VisualState.xml
TestResult.xml
# Build Results of an ATL Project
[Dd]ebugPS/
[Rr]el...
How can I map True/False to 1/0 in a Pandas DataFrame?
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UserUser
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