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PHP - concatenate or directly insert variables in string

..., you should really choose the one you prefer :-) Personally, I would go with your second solution in such a case (Variable interpolation), which I find easier to both write and read. The result will be the same; and even if there are performance implications, those won't matter 1. As a sidenote...
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Why when a constructor is annotated with @JsonCreator, its arguments must be annotated with @JsonPro

In Jackson, when you annotate a constructor with @JsonCreator , you must annotate its arguments with @JsonProperty . So this constructor ...
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Where should I put tags in HTML markup?

... Here's what happens when a browser loads a website with a <script> tag on it: Fetch the HTML page (e.g. index.html) Begin parsing the HTML The parser encounters a <script> tag referencing an external script file. The browser requests the script file. Meanwhi...
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Disable dragging an image from an HTML page

...tElementById('my-image').ondragstart = function() { return false; }; See it working (or not working, rather) It seems you are using jQuery. $('img').on('dragstart', function(event) { event.preventDefault(); }); share ...
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Why is my Spring @Autowired field null?

...ring doesn't know about the copy of MileageFeeCalculator that you created with new and didn't know to autowire it. The Spring Inversion of Control (IoC) container has three main logical components: a registry (called the ApplicationContext) of components (beans) that are available to be used by the...
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What does href expression do?

... An <a> element is invalid HTML unless it has either an href or name attribute. If you want it to render correctly as a link (ie underlined, hand pointer, etc), then it will only do so if it has a href attribute. Code like this is therefore sometimes used as a w...
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Save PL/pgSQL output from PostgreSQL to a CSV file

... built in COPY command. e.g. Copy (Select * From foo) To '/tmp/test.csv' With CSV DELIMITER ',' HEADER; This approach runs entirely on the remote server - it can't write to your local PC. It also needs to be run as a Postgres "superuser" (normally called "root") because Postgres can't stop it doi...
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How to persist a property of type List in JPA?

What is the smartest way to get an entity with a field of type List persisted? 12 Answers ...
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How to increase storage for Android Emulator? (INSTALL_FAILED_INSUFFICIENT_STORAGE)

... Update This answer is, as I write this, nearly eight years old, and about five years stale. But it's still (as I write this) the "accepted" answer, because it answered the question when it was asked. The newer answer, that applies to the newer Android St...
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Static hosting on Amazon S3 - DNS Configuration

I'm working on a little webapp (all client-side) I want to host it on Amazon S3. I've found several guides on this and have managed to create myself a bucket (with the same name as my domain), set it as a website and upload some content. ...