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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...by the user. The programmer uses the name returned by Detect to change the content of the label.
Figure 12 shows the block for the sample application. Programmer does not need to know how the gestures are detected, and they need only to take care of the actions after the gesture detection. When the...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...by the user. The programmer uses the name returned by Detect to change the content of the label.
Figure 12 shows the block for the sample application. Programmer does not need to know how the gestures are detected, and they need only to take care of the actions after the gesture detection. When the...
jQuery deferreds and promises - .then() vs .done()
I've been reading about jQuery deferreds and promises and I can't see the difference between using .then() & .done() for successful callbacks. I know Eric Hynds mentions that .done() and .success() map to the same functionality but I'm guessing so does .then() as all the callbacks are al...
error: Unable to find vcvarsall.bat
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Update: Comments point out that the instructions here may be dangerous. Consider using the Visual C++ 2008 m>Ex m>press edition or the purpose-built Microsoft Visual C++ Compiler for Python (details) and NOT using the original answer below....
How to check for file lock? [duplicate]
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@BartoszKP m>Ex m>actly, and thank you. Here's the updated contents of the 'catch' clause: const int ERROR_SHARING_VIOLATION = 0x20; const int ERROR_LOCK_VIOLATION = 0x21; int errorCode = e.HResult & 0x0000FFFF; return errorCode == ERROR_SHARING_VIOLATION || errorCode == ERROR_LO...
Python multiprocessing PicklingError: Can't pickle
I am sorry that I can't reproduce the error with a simpler m>ex m>ample, and my code is too complicated to post. If I run the program in IPython shell instead of the regular Python, things work out well.
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Are Javascript arrays sparse?
That is, if I use the current time as an indm>ex m> into the array:
7 Answers
7
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When do I really need to use atomic instead of bool? [duplicate]
...ng in-flight loads/stores to complete and commit, not write back the whole contents of any private caches. Access to our dirty private caches by other cores happens on demand.
– Peter Cordes
Jul 5 '19 at 1:00
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Const in JavaScript: when to use it and is it necessary?
...const is immutable. For objects and arrays it can't be reassigned, but the contents can be changed (e.g. array.push).
– Florian Wendelborn
Jan 2 '17 at 5:00
Change R default library path using .libPaths in Rprofile.site fails to work
...uld also be mentioned that the result from this operation also appends the contents of calls to .Library and .Library.site, which is further reason why an RStudio- (or any other IDE or network installed-) hosted R might m>ex m>hibit different behavior.
Since Sys.getenv() returns the current system envir...