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App Inventor 2 扩展 · App Inventor 2 中文网
...reate extension components
3.1 Practice creating a sample component
3.2 Convert your sample component to an extension
3.2.2 Test your extension
3.3 Details on creating extensions
3.3.1 When you start to build
3.3.2 Requesting permissions for the extensions you define
3.2.3 Using external li...
How do I add the contents of an iterable to a set?
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You can use the set() function to convert an iterable into a set, and then use standard set update operator (|=) to add the unique values from your new set into the existing one.
>>> a = { 1, 2, 3 }
>>> b = ( 3, 4, 5 )
>>> a |= set...
Java 8 stream's .min() and .max(): why does this compile?
...his decorator is the magic that allows Integer::max and Integer::min to be converted into a Comparator.
– Chris Kerekes
Oct 21 '16 at 20:58
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Find CRLF in Notepad++
... Format. In that case you can always go to Edit -> EOL Conversion -> Convert to Unix Format, and after the replacement switch it back and Edit -> EOL Conversion -> Convert to Windows Format.
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Pickle or json?
...ould have added a field, or replaced a whole sub structure. Writing such a converter (migration) for dict/list is straight forward, but with Pickle you'll have a hard time loading it in the first place, before you can even think of converting.
– vog
Jan 16 '17 ...
How do I have an enum bound combobox with custom string formatting for enum values?
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You could write an TypeConverter that reads specified attributes to look them up in your resources. Thus you would get multi-language support for display names without much hassle.
Look into the TypeConverter's ConvertFrom/ConvertTo methods, and u...
How to create P12 certificate for iOS distribution
...downloaded them. I was following instructions here on Stack Overflow to convert it to PEM and then to P12 files, but I'm stuck. When I then attempt to convert the PEM to P12, it wants a private key of some sort, and I don't know where to get it.
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Removing an element from an Array (Java) [duplicate]
...tters, or for a loosely coupled SOA integration. In the later, it is OK to convert them to Collections and pass them to the business logic as that.
For the low level performance stuff, it is usually already obfuscated by the quick-and-dirty imperative state-mingling by for loops, etc. In that case ...
How to report an error from a SQL Server user-defined function
...lp information:
Msg 245, Level 16, State 1, Line 1
Conversion failed when converting the varchar value 'Error happened here.' to data type int.
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Why should I use core.autocrlf=true in Git?
...les from the repo (which should have LF line endings in this scenario) are converted to CRLF line endings on checkout to a Windows PC. All files are converted back to LF line endings on commit from a Windows PC. The way to get in trouble is to checkout initially to a Windows PC with the wrong core...