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使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...dians[a] that the two fingers rotate. When the angle is smaller than 0, it means that fingers rotate clockwise; when the angle is bigger than 0, it means that the fingers rotate counterclockwise. It changes the heading of ArrowSprite corresponding to the angle it returns. At the end of Rotate, it up...
What's “requestCode” used for on PendingIntent?
...ndingIntent.getService(context, 0, startIntent4, 0); would be okay then? I mean, won't this override because it's calling getService() instead of getBroadcast()?
– Jenix
Oct 20 '16 at 10:03
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belongs_to through associations
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@ChrisNicola can you please explain what you meant, I didn't understand what you meant.
– aks
Jan 19 '18 at 12:09
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Identity increment is jumping in SQL Server database
...en I restarted the server and then when I added the row I got 1209309 that means what you said is absolutely right. thanks alot. now can you plz tell me how can I solve this problem. would you suggest me to use sql server 2008 instead of 2012 that I was previously using or even using 2012 this probl...
Adding an identity to an existing column
...WITCH statement to change the schema of a table without changing the data, meaning you can replace a table with an IDENTITY with an identical table schema, but without an IDENTITY column. The same trick works to add IDENTITY to an existing column.
Normally, ALTER TABLE...SWITCH is used to efficien...
SQL WHERE.. IN clause multiple columns
...ULLY WHAT YOU WANT
When I see an in with two columns, I can imagine it to mean two things:
The value of column a and column b appear in the other table independently
The values of column a and column b appear in the other table together on the same row
Scenario 1 is fairly trivial, simply use t...
How to declare a type as nullable in TypeScript?
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As Ryan pointed out... ? means optional in typescript, not nullable. Without ? means the var must be set to a value including null or undefined. With ? you can skip the whole declaration-thingy.
– He Nrik
Apr 2...