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delete map[key] in go?
...ems a poor use of resources though!
Another way is to check for existence and use the value itself:
package main
func main () {
var sessions = map[string] chan int{};
sessions["moo"] = make (chan int);
_, ok := sessions["moo"];
if ok {
delete(sessions, "moo");
}
}
...
Shallow copy of a Map in Java
As I understand it, there are a couple of ways (maybe others as well) to create a shallow copy of a Map in Java:
3 Answer...
Compare DATETIME and DATE ignoring time portion
... to the date-part of the day after DF2.
I.e. (DF1 >= CAST(DF2 AS DATE)) AND (DF1 < DATEADD(dd, 1, CAST(DF2 AS DATE)))
NOTE: It is very important that the comparison is >= (equality allowed) to the date of DF2, and (strictly) < the day after DF2. Also the BETWEEN operator doesn't work bec...
Why does Typescript use the keyword “export” to make classes and interfaces public?
...meClass = SomeClass;.
So conceptually, visibility as controlled by public and private is just for tooling, whereas the export keyword changes the output.
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How to pass parameters to a view
...new MenuView({
collection: itemColl,
position: this.getPosition()
})
And then, in MenuView, you can use this.options.position.
UPDATE: As @mu is too short states, since 1.1.0, Backbone Views no longer automatically attach options passed to the constructor as this.options, but you can do it yo...
Maintaining the final state at end of a CSS3 animation
...e set to opacity: 0; in the CSS. The animation class is applied onClick, and, using keyframes, it changes the opacity from 0 to 1 (among other things).
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How to write Unicode characters to the console?
...g = System.Text.Encoding.UTF8;
(MSDN link to supporting documentation.)
And here's a little console test app you may find handy:
C#
using System;
using System.Text;
public static class ConsoleOutputTest {
public static void Main() {
Console.OutputEncoding = System.Text.Encoding.UTF...
C#: Looping through lines of multiline string
...
I suggest using a combination of StringReader and my LineReader class, which is part of MiscUtil but also available in this StackOverflow answer - you can easily copy just that class into your own utility project. You'd use it like this:
string text = @"First line
secon...
delete_all vs destroy_all?
...ave a user whose user ID is across many tables. I want to delete this user and every record that has his ID in all tables.
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Gets byte array from a ByteBuffer in java
...hat you want is to retrieve the bytes that are remaining (between position and limit), then what you have will work. You could also just do:
ByteBuffer bb =..
byte[] b = new byte[bb.remaining()];
bb.get(b);
which is equivalent as per the ByteBuffer javadocs.
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