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Convert list to tuple in Python
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l1=[]#empty list is given
l1=tuple(l1)#through the type casting method we can convert list into tuple
print(type(l1))#now this show class of tuple
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Is returning by rvalue reference more efficient?
...g by rvalue can be more efficient. std::move() is just used as an explicit cast to illustrate the point more clearly. It's not a code you would copy-paste into your project. It doesn't contradict top-voted answer, because there temporary object is created inside the function. Here returned object is...
How would one write object-oriented code in C? [closed]
...; // This is a non-virtual call
Stack.push(st, thing1); // This is like casting *st to a Stack (which it already is) and doing the push
st->my_type.push(st, thing2); // This is a virtual call
}
I didn't do the destructor or delete, but it follows the same pattern.
this_is_here_as_an_exam...
离线版启动超时，有报错日志 - App Inventor 2 离线版 - 清泛IT社区，为创新赋能！
web服务启动报错：
Picked up JAVA_TOOL_OPTIONS: "-Dfile.encoding=UTF-8"
Executing [D:\appinventor\AppInventor2\resources\app.asar.unpacked\OpenJDK\bin\java, --add-opens=java.base/java.lang=ALL-UNNAMED, -Xmx4G, --add-opens, java.base/java.net=ALL-UNNAMED, --add-opens, java.base/sun.ne...
How to define a custom ORDER BY order in mySQL
...ally it will use that internal index instead of the string values ( unless CAST() is used to make it back to a VARCHAR)
– Simon at My School Portal
Mar 26 '15 at 9:36
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python assert with and without parenthesis
...nd the expression is evaluated as a tuple, which is always True when being casted to bool
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What does Class mean in Java?
...s<Foo>. That way you can create a new instance, for example, without casting: Foo foo = clazz.newInstance();
if you don't use generics at all, you'll get a warning at least (and not using generics is generally discouraged as it may lead to hard-to-detect side effects)
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How to use shared memory with Linux in C
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Why are you casting 0 into a void* instead of using NULL ?
– Clément Péau
Mar 28 '17 at 15:45
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Your build failed due to an error in the AAPT stage, not because of an...
大概率是因为项目名称是中文导致的，换成英文的就ok，这个问题先记录下来，后续fun23.cn平台可以解决。
----------------以下是参考资料-----------
需要注意的事项：该项目已超过 30MB 的最大大小该项目已超出建议的最大 10 个...
Will Dart support the use of existing JavaScript libraries?
...through our issue tracker @ link. I do not believe this decision has been cast in stone yet.
– jtmcdole
Oct 13 '11 at 18:50
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