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How to get an object's properties in JavaScript / jQuery?
...quired. To know the base class name, you may invoke the Object.prototype.toString method on an object, like this:
alert(Object.prototype.toString.call([]));
The above will output [object Array].
There are several other class names, like [object Object], [object Function], [object Date], [object ...
Illegal mix of collations MySQL Error
...me whether this has side effects. Therefore I tried somehow to convert the string into some other format that solved the collation problem.
What I found working is to do the string compare by converting the strings into a hexadecimal representation of it's characters. On the database this is done wi...
How to add percent sign to NSString
I want to have a percentage sign in my string after a digit. Something like this: 75%.
7 Answers
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How to convert Milliseconds to “X mins, x seconds” in Java?
...
Use the java.util.concurrent.TimeUnit class:
String.format("%d min, %d sec",
TimeUnit.MILLISECONDS.toMinutes(millis),
TimeUnit.MILLISECONDS.toSeconds(millis) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis))
);
Note: TimeUnit is part ...
ES6 class variable alternatives
...bles in ESNext, check this example:
class Foo {
bar = 2
static iha = 'string'
}
const foo = new Foo();
console.log(foo.bar, foo.iha, Foo.bar, Foo.iha);
// 2, undefined, undefined, 'string'
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How to delete from a text file, all lines that contain a specific string?
...would I use sed to delete all lines in a text file that contain a specific string?
17 Answers
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Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...候。格式如下：
sub (regular expression, substitution string):
sub (regular expression, substitution string, target string)
实例：
$ awk '{ sub(/test/, "mytest"); print }' testfile
$ awk '{ sub(/test/, "mytest"); $1}; print }' testf...
How do I make the method return type generic?
... define callFriend this way:
public <T extends Animal> T callFriend(String name, Class<T> type) {
return type.cast(friends.get(name));
}
Then call it as such:
jerry.callFriend("spike", Dog.class).bark();
jerry.callFriend("quacker", Duck.class).quack();
This code has the benefit...
Find document with array that contains a specific value
...
As favouriteFoods is a simple array of strings, you can just query that field directly:
PersonModel.find({ favouriteFoods: "sushi" }, ...);
But I'd also recommend making the string array explicit in your schema:
person = {
name : String,
favouriteFoods...
sprintf like functionality in Python
I would like to create a string buffer to do lots of processing, format and finally write the buffer in a text file using a C-style sprintf functionality in Python. Because of conditional statements, I can’t write them directly to the file.
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