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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
...lows everyone, especially novices, to start programming and building fully functional apps for Android devices. Compared to traditional text programming with Android Studio, it has limited features. We enabled App Inventor with multi-touch gestures detection, such as two-finger rotation, and user-de...
Match whole string
...the following string: 'the first 3 letters of the alphabet are abc. not abc123'
I think you would want to use \b (word boundaries):
var str = 'the first 3 letters of the alphabet are abc. not abc123';
var pat = /\b(abc)\b/g;
console.log(str.match(pat));
Live example: http://jsfiddle.n...
unable to copy/paste in mingw shell
... answered Jun 8 '17 at 22:33
mdo123mdo123
1,34733 gold badges99 silver badges2929 bronze badges
...
What does $1 [QSA,L] mean in my .htaccess file?
..."/page.php?page=$1" [QSA]
With the [QSA] flag, a request for
/pages/123?one=two
will be mapped to
/page.php?page=123&one=two
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Get nested JSON object with GSON using retrofit
...s":"OK",
"reason":"some reason",
"content" :
{
"foo": 123,
"bar": "some value"
}
}
You'd then have a Content POJO:
class Content
{
public int foo;
public String bar;
}
Then you write a deserializer:
class MyDeserializer implements JsonDeserializer<Co...
When to use ref and when it is not necessary in C#
...mean it's good. It would have been better if rather than if (int.TryParse("123", out var theInt) { /* use theInt */ } we had var candidate = int.TrialParse("123"); if (candidate.Parsed) { /* do something with candidate.Value */ } It is more code, but is much more consistent with the C# language desi...
Hide options in a select list using jQuery
...Nov 17 '10 at 13:17
enthusiastic123enthusiastic123
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...
How to make connection to Postgres via Node.js
... single user name from id:
db.one('SELECT name FROM users WHERE id = $1', [123])
.then(user => {
console.log(user.name); // print user name;
})
.catch(error => {
console.log(error); // print the error;
});
// alternative - new ES7 syntax with 'await':
// await ...
How can I send large messages with Kafka (over 15MB)?
...roperties. Now also bigger messages work :).
– Sonson123
Feb 3 '14 at 15:37
3
Are there any known...
How do you build a Singleton in Dart?
...sible way:
void main() {
var s1 = Singleton.instance;
s1.somedata = 123;
var s2 = Singleton.instance;
print(s2.somedata); // 123
print(identical(s1, s2)); // true
print(s1 == s2); // true
//var s3 = new Singleton(); //produces a warning re missing default constructor and breaks on ...