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jQuery: Difference between position() and offset()
...or example, with this document:
<div style="position: absolute; top: 200; left: 200;">
<div id="sub"></div>
</div>
Then the $('#sub').offset() will be {left: 200, top: 200}, but its .position() will be {left: 0, top: 0}.
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How to check if smtp is working from commandline (Linux) [closed]
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edited Aug 15 '19 at 16:20
rogerdpack
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ans...
关于App Inventor 2颜色积木，社区里追问最多的8个问题 - App应用开发 - 清...
...频的8个问题，一次性说透。
Q1: 基本颜色块弹出来的70种颜色不够用，怎么自定义更多颜色？
A: 那70种颜色是系统预置的快捷选择色板，并不是只能用这70种。
如果你想用任意颜色，有两个办法：
方法一：直接用合成颜...
jquery if div id has children
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if ( $('#myfav').children().length > 0 ) {
// do something
}
This should work. The children() function returns a JQuery object that contains the children. So you just need to check the size and see if it has at least one child.
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Remove grid, background color, and top and right borders from ggplot2
...d panel.background to see the axis lines.
library(ggplot2)
a <- seq(1,20)
b <- a^0.25
df <- as.data.frame(cbind(a,b))
ggplot(df, aes(x = a, y = b)) + geom_point() +
theme_bw() +
theme(axis.line = element_line(colour = "black"),
panel.grid.major = element_blank(),
panel.grid.mi...
Editing dictionary values in a foreach loop
... double percent = colStates[key] / TotalCount;
if (percent < 0.05)
{
OtherCount += colStates[key];
colStates[key] = 0;
}
}
Or...
Creating a list of modifications
List<string> keysToNuke = new List<string>();
foreach(string key in colStates.Keys)
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How to copy a dictionary and only edit the copy
...re making them refer to the same exact dict object, so when you mutate it, all references to it keep referring to the object in its current state.
If you want to copy the dict (which is rare), you have to do so explicitly with
dict2 = dict(dict1)
or
dict2 = dict1.copy()
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How to pass arguments and redirect stdin from a file to program run in gdb?
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edited Dec 23 '10 at 17:32
answered Dec 23 '10 at 17:21
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Go to beginning of line without opening new line in VI
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