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object==null or null==object?

... left side of == isn't really useful in Java since Java requires that the em>xm>pression in an if evaluate to a boolean value, so unless the constant is a boolean, you'd get a compilation error either way you put the arguments. (and if it is a boolean, you shouldn't be using == anyway...) ...
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How do I Moq a method that has an optional argument in its signature without em>xm>plicitly specifying i

... I believe your only choice right now is to em>xm>plicitly include the bool parameter in the setup for Foo. I don't think it defeats the purpose of specifying a default value. The default value is a convenience for calling code, but I think that you should be em>xm>plicit in y...
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dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output

...b, .drop=FALSE) %>% summarise(count_a=length(a)) #> # A tibble: 3 m>xm> 2 #> b count_a #> <fct> <int> #> 1 1 6 #> 2 2 6 #> 3 3 0 One additional note to go with @Moody_Mudskipper's answer: Using .drop=FALSE can give potentially...
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OnNotify函数 ON_NOTIFY消息总结 - C/C++ - 清泛网 - 专注C/C++及内核技术

...am; if( hdr->code==NM_CLICK && hdr->idFrom==IDC_BUTTON1) { MessageBom>xm>(L"你单击了Button1",L"消息"); } return CDialog::OnNotify(wParam,lParam,pResult); } (OnNotify()不响应按钮单击事件?) 自定义WM_NOTIFY消息 习惯了用自定义用户消息进行各种状...
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What's the best way to break from nested loops in JavaScript?

... them, of course. But why don't they use them? ... – m>Xm>ML May 2 '14 at 20:43 7 @Web_Designer I bel...
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How to remove specific elements in a numpy array

... Use numpy.delete() - returns a new array with sub-arrays along an am>xm>is deleted numpy.delete(a, indem>xm>) For your specific question: import numpy as np a = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9]) indem>xm> = [2, 3, 6] new_a = np.delete(a, indem>xm>) print(new_a) #Prints `[1, 2, 5, 6, 8, 9]` Note...
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Which characters need to be escaped when using Bash?

...bash. 1. Put the whole string in single quotes This works for all chars em>xm>cept single quote itself. To escape the single quote, close the quoting before it, insert the single quote, and re-open the quoting. 'I'\''m a s@fe $tring which ends in newline ' sed command: sed -e "s/'/'\\\\''/g; 1s/^/'...
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【解决】Missing FindPython3.cmake - C/C++ - 清泛网 - 专注IT技能提升

...ssing-FindPython3-cmake编译llvm时,报错:CMake Error at CMakeLists tm>xm>t:729 (find_package): By not providing "FindPython3 cmake" in CMAKE_MODULE_PATH this project has asked 编译llvm时,报错: CMake Error at CMakeLists.tm>xm>t:729 (find_package): By not providing "FindPython3.cmake...
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【解决】Missing FindPython3.cmake - C/C++ - 清泛网 - 专注IT技能提升

...ssing-FindPython3-cmake编译llvm时,报错:CMake Error at CMakeLists tm>xm>t:729 (find_package): By not providing "FindPython3 cmake" in CMAKE_MODULE_PATH this project has asked 编译llvm时,报错: CMake Error at CMakeLists.tm>xm>t:729 (find_package): By not providing "FindPython3.cmake...
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【解决】Missing FindPython3.cmake - C/C++ - 清泛网移动版 - 专注IT技能提升

...ssing-FindPython3-cmake编译llvm时,报错:CMake Error at CMakeLists tm>xm>t:729 (find_package): By not providing "FindPython3 cmake" in CMAKE_MODULE_PATH this project has asked 编译llvm时,报错: CMake Error at CMakeLists.tm>xm>t:729 (find_package): By not providing "FindPython3.cmake...