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What is this smiley-with-beard expression: “”?
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How to merge images in command line? [closed]
...
If you prefer to merge the pictures from left to right, use the following command:
convert image{1..0}.png +append result/result-sprite.png
Note the +append instead of -append.
share...
Insert at first position of a list in Python [closed]
...
From the documentation:
list.insert(i, x)
Insert an item at a given position. The first
argument is the index of the element before which to insert, so
a.insert(0, x) inserts at the front of the list, and a.insert(...
调用空智能指针对象的函数，Windows及Linux行为解析 - C/C++ - 清泛网 - 专...
...memory>
#include <assert.h>
class RawValue : public std::enable_shared_from_this<RawValue> {
public:
bool IsNull() {
printf("this:%x\n", this);
return this == nullptr;
}
int val_{0};
};
using NValue = std::shared_ptr<RawValue>;
int main() {
NValue null;
assert(null == nullp...
How to use the 'sweep' function
... is defined by STATS.
So, for each row (or column), you will take a value from STATS and use in the operation defined by FUN.
For instance, if you want to add 1 to the 1st row, 2 to the 2nd, etc. of the matrix you defined, you will do:
sweep (M, 1, c(1: 4), "+")
I frankly did not understand th...
Getters \ setters for dummies
...perty names are abstracted with an underscore in order to discourage users from simply doing foo.bar vs. foo.get( 'bar' ) and getting an "uncooked" value. You can use conditional code to do different things depending on the name of the property being accessed (via the name parameter).
Object.define...
Android: How to Programmatically set the size of a Layout
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// Calculate titleBarHeight by deducting statusBarHeight from contentViewTop
int titleBarHeight = contentViewTop - statusBarHeight;
Log.i("MY", "titleHeight = " + titleBarHeight + " statusHeight = " + statusBarHeight + " contentViewTop = " + conte...
What is the “realm” in basic authentication
...
From RFC 1945 (HTTP/1.0) and RFC 2617 (HTTP Authentication referenced by HTTP/1.1)
The realm attribute (case-insensitive) is required for all
authentication schemes which issue a challenge. The realm value
(case-sensi...
What does the leading semicolon in JavaScript libraries do?
...referred to as a leading semicolon.
Its main purpose is to protect itself from preceding code that was improperly closed, which can cause problems. A semicolon will prevent this from happening. If the preceding code was improperly closed then our semicolon will correct this. If it was properly clos...