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How do I change the value of a global variable inside of a function
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C++ stl stack/queue 的使用方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...当栈空时，返回true。
访问栈中的元素个数，如例：s.size()。
2、queue
queue 模板类的定义在<queue>头文件中。
与stack 模板类很相似，queue 模板类也需要两个模板参数，一个是元素类型，一个容器类型，元素类型是必要的，容器...
How to refresh app upon shaking the device?
... {
float x = se.values[0];
float y = se.values[1];
float z = se.values[2];
mAccelLast = mAccelCurrent;
mAccelCurrent = (float) Math.sqrt((double) (x*x + y*y + z*z));
float delta = mAccelCurrent - mAccelLast;
mAccel = mAccel * 0.9f + delta; // perform low-cut...
Call apply-like function on each row of dataframe with multiple arguments from each row
... a subset of the original data.
dat <- data.frame(x=c(1,2), y=c(3,4), z=c(5,6))
apply(dat[,c('x','z')], 1, function(x) sum(x) )
or if your function is just sum use the vectorized version:
rowSums(dat[,c('x','z')])
[1] 6 8
If you want to use testFunc
testFunc <- function(a, b) a + b
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Is it possible to set the stacking order of pseudo-elements below their parent element? [duplicate]
... stacking order.
Positioning the pseudo-element (absolute) and assigning a z-index value other than “auto” creates the new stacking context.
#element {
position: relative; /* optional */
width: 100px;
height: 100px;
background-color: blue;
}
#element::after {
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Multiple modals overlay
...orter solution that is inspired by @YermoLamers & @Ketwaroo.
Backdrop z-index fix
This solution uses a setTimeout because the .modal-backdrop isn't created when the event show.bs.modal is triggered.
$(document).on('show.bs.modal', '.modal', function () {
var zIndex = 1040 + (10 * $('.modal...
How to use glOrtho() in OpenGL?
...that you see in the bottom row. No matter how far away vertexes are in the z direction, they will not recede into the distance.
I use glOrtho every time I need to do 2D graphics in OpenGL (such as health bars, menus etc)
using the following code every time the window is resized:
glMatrixMode(GL_PR...
bootstrap popover not showing on top of all elements
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Vaidas
78088 silver badges2222 bronze badges
answered Apr 12 '13 at 22:37
KyleKyle
26.6k3131 gold badges111111 si...
date format yyyy-MM-ddTHH:mm:ssZ
...sume this should be pretty simple, but could not get it :(.
In this format Z is time zone.
T is long time pattern
How could I get a date in this format except by using
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Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]
I've seen Bash scripts test for a non-zero length string in two different ways. Most scripts use the -n option:
6 Answers...