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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....
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socket.io and session?

... session_store.get(connect_sid, function (error, session) { //HOORAY NOW YOU'VE GOT THE SESSION OBJECT!!!! }); } }); You can then use the session as needed. share | improve this answer...
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Does a javascript if statement with multiple conditions test all of them?

...bles, each function may take a long time, and not only is it important to know this short circuits, but in what order. For example: if (takesSeconds() && takesMinutes()) is much better than if (takesMinutes() && takesSeconds()) if both are equally likely to return false. ...
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Can I install/update WordPress plugins without providing FTP access?

...you to use the 'direct' method of installing plugins, themes, or updates. Now, if for some reason you do not want to rely on the automatic check for which filesystem method to use, you can define a constant, 'FS_METHOD' in your wp-config.php file, that is either 'direct', 'ssh', 'ftpext' or 'ftpsoc...
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Why JavaScript rather than a standard browser virtual machine?

...never went into IT). But it's not going to happen, and we're stuck with it now. I suspect, in time, it will become the "Machine language" for the web, with other better designed languages and APIs compile down to it (and cater for different runtime engine foibles). I don't think, however, any of t...
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How do I set up email confirmation with Devise?

...devise:views # global rails generate devise:views users # scoped You can now override the mailer views in devise/mailer/confirmation_instructions.html.erb or users/mailer/confirmation_instructions.html.erb depending on your setup 4. For development environment add the following config lines in /c...
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#pragma once vs include guards? [duplicate]

I'm working on a codebase that is known to only run on windows and be compiled under Visual Studio (it integrates tightly with excel so it's not going anywhere). I'm wondering if I should go with the traditional include guards or use #pragma once for our code. I would think letting the compiler de...
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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...
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How do I undo 'git add' before commit?

...used to error out when you do not have any commits in your history, but it now gives you an empty index (to match non-existent commit you are not even on). Documentation: git reset share | improve ...
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How do I link to part of a page? (hash?)

... Note this is now obsolete in HTML5. – Tim Jun 12 '16 at 11:53 add a comment  |  ...