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Which @NotNull Java annotation should I use?
...
package javax.annotation;
@TypeQualifierNickname
@Nonnull(when = When.UNKNOWN)
@Retention(RUNTIME)
public @interface Nullable {}
package org.checkerframework.checker.nullness.qual;
@Retention(RUNTIME)
@Target({TYPE_USE, TYPE_PARAMETER})
@SubtypeOf({})
@ImplicitFor(
literals = {LiteralKind....
Regex lookahead, lookbehind and atomic groups
...ume any characters so that search for REGEX_2 starts at the same location. Now REGEX_2 makes sure that the string matches some other rules. Without look-ahead it would match strings of length three or five.
Negative lookahead
Syntax:
(?!REGEX_1)REGEX_2
Match only if REGEX_1 does not match; af...
Legality of COW std::string implementation in C++11
... whole point of doing the copying is that such references or iterators are now being obtained, so copying is necessary. But it may still be that C++11 disallows COW implementations.
– Cheers and hth. - Alf
Dec 18 '14 at 3:57
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Correct way to convert size in bytes to KB, MB, GB in JavaScript
...e fixed version below. Aliceljm does not active her copied code anymore
Now, Fixed version unminified, and ES6'ed: (by community)
function formatBytes(bytes, decimals = 2) {
if (bytes === 0) return '0 Bytes';
const k = 1024;
const dm = decimals < 0 ? 0 : decimals;
const sizes...
Named placeholders in string formatting
... the position in the list of args, which makes it a renaming problem. You know the name of the keys, which means you can decide a position for a key in the list of arguments. from now on value will be known as 0 and column as 1: MessageeFormat.format("There's an incorrect value \"{0}\" in ...
What is Node.js? [closed]
...vent loops with first class function objects and closures. People already know how to use it this way having used it in the browser to respond to user initiated events.
A lot of people already know JavaScript, even people who do not claim to be programmers. It is arguably the most popular programmin...
Rails: Missing host to link to! Please provide :host parameter or set default_url_options[:host]
I have been googling for about 90 minutes now and still don't have an answer to this. Where do I set default_url_options ? I've already set it for config.action_mailer.default_url_options to solve this same bug elsewhere, but now I'm getting this error when trying to use a URL helper inside an ...
Explain Morris inorder tree traversal without using stacks or recursion
...sal. So X is made the right child of B, then current is set to Y. The tree now looks like this:
Y
/ \
A B
\
X
/ \
(Y) Z
/ \
C D
(Y) above refers to Y and all of its children, which are omitted for recursion issues. The important part is li...
Should Github be used as a CDN for javascript libraries? [closed]
...
I hope you know CachedCommons.com is just serving from github.com
– ocodo
Dec 27 '12 at 6:00
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Nested Git repositories?
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The blog seems to work fine now, and unfortunately for sage, the 34 (now 35) up-votes on the comment seems to agree that there is a value in the blog article. Turns out you don't have to sacrifice accuracy for clarity and operation-specific advice. Afte...