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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
... games, such as Harry Porter. The player can perform different gestures to cast spells to complete some actions needed. Apps can also use custom gestures as shortcuts to perform certain actions.
Our implementation of custom gesture detection involves two parts: 1) how to add user-defined gestures, ...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
... games, such as Harry Porter. The player can perform different gestures to cast spells to complete some actions needed. Apps can also use custom gestures as shortcuts to perform certain actions.
Our implementation of custom gesture detection involves two parts: 1) how to add user-defined gestures, ...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
... games, such as Harry Porter. The player can perform different gestures to cast spells to complete some actions needed. Apps can also use custom gestures as shortcuts to perform certain actions.
Our implementation of custom gesture detection involves two parts: 1) how to add user-defined gestures, ...
Are +0 and -0 the same?
Reading through the ECMAScript 5.1 specification , +0 and -0 are distinguished.
9 Answers
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What's the difference between tilde(~) and caret(^) in package.json?
After I upgraded to latest stable node and npm , I tried npm install moment --save . It saves the entry in the package.json with the caret ^ prefix. Previously, it was a tilde ~ prefix.
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How to profile a bash shell script slow startup?
...bashstart.PID.log that shows the seconds.nanoseconds timestamp of each command that was executed. The difference from one time to the next is the amount of time that the intervening step took.
As you narrow things down, you can move set -x later and set +x earlier (or bracket several sections of in...
Why does the expression 0 < 0 == 0 return False in Python?
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I believe Python has special case handling for sequences of relational operators to make range comparisons easy to express. It's much nicer to be able to say 0 < x <= 5 than to say (0 < x) and (x <= 5).
These are called chained comparisons. And th...
What is the difference between float and double?
I've read about the difference between double precision and single precision. However, in most cases, float and double seem to be interchangeable, i.e. using one or the other does not seem to affect the results. Is this really the case? When are floats and doubles interchangeable? What are the d...
Phonegap Cordova installation Windows
...ation... here's what i discovered.
Ignore the installation documentation and all the command line, node.js stuff (seriously you will waste hours on this.
Go to github and simply download the PhoneGap master .zip
In that zip are project files for window phone, etc platform... just use those templat...
How can I profile C++ code running on Linux?
... a profiler, use one of the suggested ones.
However, if you're in a hurry and you can manually interrupt your program under the debugger while it's being subjectively slow, there's a simple way to find performance problems.
Just halt it several times, and each time look at the call stack. If there...