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地图组件（高德地图） · App Inventor 2 中文网
...类型控制（6~10），6卫星（st），7简图（st rd），8详图（不透明rd，透明图st）
scl：地图分辨率控制，1=256，2=512
ltype：线性控制，增加后，只对地图特征进行控制，没有文字注记，特征多少，是否透明。1 ~ 7 可以自行试试效果。
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How to access maven.build.timestamp for resource filtering
...tly have to add this is you have the other... -->
</resource>
NB if you're using spring boot as your parent, you have to use @maven.build.timestamp@ instead. Also note if you're using spring boot there's a file META-INF/build-info.properties that is optionally created by the spring-boo...
How are Python's Built In Dictionaries Implemented?
...Python Dictionaries use Open addressing (reference inside Beautiful code)
NB! Open addressing, a.k.a closed hashing should, as noted in Wikipedia, not be confused with its opposite open hashing!
Open addressing means that the dict uses array slots, and when an object's primary position is taken in...
C# 'is' operator performance
...ox 57 milliseconds, and the enum comparison coming in at 29 milliseconds.
NB I'd still prefer the is check, the difference is too small to care about
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C++虚继承的概念 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++虚继承的概念C++中虚拟继承的概念为了解决从不同途径继承来的同名的数据成员在内存中有不同的拷贝造成数据不一致问题，将共同基类设置为虚基类。这时从...C++中虚拟继承的概念
为了解决从不同途径继承来的同名的数据...
Wrap a delegate in an IEqualityComparer
...Func<T, T, bool> comparer )
: this( comparer, t => 0 ) // NB Cannot assume anything about how e.g., t.GetHashCode() interacts with the comparer's behavior
{
}
public FuncEqualityComparer( Func<T, T, bool> comparer, Func<T, int> hash )
{
_comparer...
How can I display just a portion of an image in HTML/CSS?
...ip: rect(0, 100px, 200px, 0);
/* clip: shape(top, right, bottom, left); NB 'rect' is the only available option */
}
<div class="container">
<img src="http://lorempixel.com/200/200/nightlife/3" />
</div>
<div class="container">
<img id="clip" src="http://loremp...
What is external linkage and internal linkage?
...ier static affects the lifetime of the local variable and not its scope.
NB: The keyword static plays a double role. When used in the definitions of global variables, it specifies internal linkage. When used in the definitions of the local variables, it specifies that the lifetime of the variable ...
What is the proper declaration of main?
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NB. I posted this answer as in comments to another thread, someone tried to cite this thread as evidence that int main(void) was not correct in C++.
– M.M
Jul 1 '17 at 9:22
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How can I split up a Git commit buried in history?
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Edit the commit before <commit>
git rebase -i <commit>^^
NB: perhaps it will be also needed to edit <commit> as well.
Cherry pick <commit> into the index
git cherry-pick -n <commit>
Interactively reset unneeded changes from the index and reset the working tree
...