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App Inventor 2 列表代码块 · App Inventor 2 中文网
...异常、报错。
如果给定列表是一个二维列表，如 [["abc","123"],["xyz","456"]] ，则返回的列表项也是一个列表对象，如 ["abc","123"]。
求对象在列表中的位置
返回指定对象在列表中的位置，从 1 开始，如果不在列表中，则返回 0。
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How can I calculate the number of lines changed between two commits in git?
...
Assuming that you want to compare all of your commits between abcd123 (the first commit) and wxyz789 (the last commit), inclusive:
git log wxyz789^..abcd123 --oneline --shortstat --author="Mike Surname"
This gives succinct output like:
abcd123 Made things better
3 files changed, 14 ins...
Can an html element have multiple ids?
...answered Apr 16 '11 at 7:53
user123444555621user123444555621
123k2323 gold badges101101 silver badges120120 bronze badges
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When to use @QueryParam vs @PathParam
...blog I request
GET: myserver.com/myblog/posts
to get the post with id = 123, I would request
GET: myserver.com/myblog/posts/123
but to filter my list of posts, and get all posts since Jan 1, 2013, I would request
GET: myserver.com/myblog/posts?since=2013-01-01
In the first example "posts" i...
How to output something in PowerShell
...int as one could easily be led to believe.
function test {
Write-Host 123
echo 456 # AKA 'Write-Output'
return 789
}
$x = test
Write-Host "x of type '$($x.GetType().name)' = $x"
Write-Host "`$x[0] = $($x[0])"
Write-Host "`$x[1] = $($x[1])"
Terminal output of the above:
123
x of ty...
Better techniques for trimming leading zeros in SQL Server?
...IGINT, some types of string will still fail this conversion. Consider 0001E123 for example.
– roaima
Sep 2 '15 at 12:14
1
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What does -> mean in Python function definitions?
...versions.
According to this, the example you've supplied:
def f(x) -> 123:
return x
will be forbidden in the future (and in current versions will be confusing), it would need to be changed to:
def f(x) -> int:
return x
for it to effectively describe that function f returns an ob...
What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
...;
number = [NSNumber numberWithChar:'X'];
number = [NSNumber numberWithInt:12345];
number = [NSNumber numberWithUnsignedLong:12345ul];
number = [NSNumber numberWithLongLong:12345ll];
number = [NSNumber numberWithFloat:123.45f];
number = [NSNumber numberWithDouble:123.45];
number = [NSNumber numberWi...
What data type to use for money in Java? [closed]
...yAmount = amountFactory.setCurrency(Monetary.getCurrency("EUR")).setNumber(12345.67).create();
MonetaryAmountFormat format = MonetaryFormats.getAmountFormat(Locale.getDefault());
System.out.println(format.format(monetaryAmount));
When using the reference implementation API, the necessary code is m...
How can I sort arrays and data in PHP?
...
Might be a bit of a big edit: gist.github.com/Rizier123/24a6248758b53245a63e839d8e08a32b but if you think it is an improvement and I included everything essential I can apply it.
– Rizier123
Jun 2 '16 at 16:30
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