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Copy a stream to avoid “stream has already been operated upon or closed”
...ter `anyMatch` on the same stream results in the following exception:
java.lang.IllegalStateException: stream has already been operated upon or closed
at
java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:229)
at
java.util.stream.ReferencePipeline.noneMatch(ReferencePipeline.java:459...
Convert a RGB Color Value to a Hexadecimal String
...n class java.util.IllegalFormatConversionException with message: x != java.lang.Float
– Mig82
Jun 15 at 19:14
@smillie...
Insert new column into table in sqlite?
...ault value can not be added in ALTER TABLE for some fieldtypes: sqlite.org/lang_altertable.html
– michel.iamit
Sep 9 '13 at 8:00
9
...
How do I convert a Vector of bytes (u8) to a string
...nerally aren't good at asking questions, especially when they are new to a language. Rust makes a distinction between an array, a slice and a Vec, but newcomers don't know the differences. Make sure to upvote all questions and answers that prove useful though.
– Shepmaster
...
When do you use Java's @Override annotation and why?
...rkill when you are coding." I agree with this, which is why I find dynamic langs so wrong (though 100% of my paid work is in ruby right now).
– Dan Rosenstark
Jan 10 '10 at 18:14
4...
Is iterating ConcurrentHashMap values thread safe?
...ap.Entry<String, String>> among accessor and mutator threads java.lang.IllegalStateExceptions will start popping up.
import java.util.Iterator;
import java.util.Map;
import java.util.Random;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.E...
What are the differences between “generic” types in C++ and Java?
... such.
Java doesn't work like that. In Java all objects extent from java.lang.Object so, pre-Generics, you'd write code like this:
public class PhoneNumbers {
private Map phoneNumbers = new HashMap();
public String getPhoneNumber(String name) {
return (String)phoneNumbers.get(name);
}
...
Any way to declare a size/partial border to a box?
...raw some of the borders.
See here.
Code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Responsive partial borders</title>
<style>
/* ungrid without mobile */
.row{width:100%;display:table;table-layout:fi...
Why can't strings be mutable in Java and .NET?
...t they decided to make String immutable in Java and .NET (and some other languages)? Why didn't they make it mutable?
17 ...
Why isn't textarea an input[type=“textarea”]?
...e them. It also respects the white spaces.
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Yes I can</title>
</head>
<body>
<textarea name="test">
I can put < and > and & signs in
my...