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/data/user/0/xxxx/files（内部存储）和 /storage/emulated/0/Android/data...
...问方式、权限要求等方面有显著区别。以下是详细对比：1. 存储位置与物理路径[td]目录类型路径示例存储介质内部存储私有目录/data/user/0/xxxx/files设备内部存储（不可移除）外部存储私有目录/storage/emulated/0/Android/data/xxxx/files外...
ggplot2 plot without axes, legends, etc
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185
As per my comment in Chase's answer, you can remove a lot of this stuff using element_blank:
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Is it possible to set private property via reflection?
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t.GetProperty("CreatedOn")
.SetValue(obj, new DateTime(2009, 10, 14), null);
EDIT: Since the property itself is public, you apparently don't need to use BindingFlags.NonPublic to find it. Calling SetValue despite the the setter having less accessibility still does what you expect.
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What is the right way to check for a null string in Objective-C?
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|
edited Nov 5 '14 at 3:14
answered Jun 10 '09 at 7:45
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Heroku free account limited?
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Heroku provides, for free, a 5MB database
Heroku provides, for free, 1 dyno. A dyno is an instance of your application running and responding to requests. If each instance of your application can serve each request in 100ms, then you get 600 requests/minute with the free account.
Your applica...
warning: implicit declaration of function
... a declaration ("prototype") yet.
For example:
int main()
{
fun(2, "21"); /* The compiler has not seen the declaration. */
return 0;
}
int fun(int x, char *p)
{
/* ... */
}
You need to declare your function before main, like this, either directly or in a header:
int fun(int ...
What do linkers do?
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164
To understand linkers, it helps to first understand what happens "under the hood" when you con...
How do you set, clear, and toggle a single bit?
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Setting a bit
Use the bitwise OR operator (|) to set a bit.
number |= 1UL << n;
That will set the nth bit of number. n should be zero, if you want to set the 1st bit and so on upto n-1, if you want to set the nth bit.
Use 1ULL if number is wider than unsigned long; promotion of 1UL <&...
iOS 7 TextKit - How to insert images inline with text?
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181
You'll need to use an attributed string and add the image as instance of NSTextAttachment:
NS...