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Parameterize an SQL IN clause
...rs.AddWithValue("@tags", string.Join("|", tags);
}
Two caveats:
The performance is terrible. LIKE "%...%" queries are not indexed.
Make sure you don't have any |, blank, or null tags or this won't work
There are other ways to accomplish this that some people may consider cleaner, so please kee...
Java inner class and static nested class
...r class definition and its single instantiation into one convenient syntax form, and it would also be nice if we didn't have to think up a name for the class (the fewer unhelpful names your code contains, the better). An anonymous inner class allows both these things:
new *ParentClassName*(*constru...
Error: Jump to case label
... storage duration is not in scope to a
point where it is in scope is ill-formed unless the variable has scalar type, class type with a trivial default
constructor and a trivial destructor, a cv-qualified version of one of these types, or an array of one of the
preceding types and is declared w...
What is a serialVersionUID and why should I use it?
...ce...if it's stored or not, you probably don't care about de-serializing a form object), then you can ignore this.
If you're actually using serialization, it only matters if you plan on storing and retrieving objects using serialization directly. The serialVersionUID represents your class version,...
What are the differences between Deferred, Promise and Future in JavaScript?
...scripts that have networks of dependencies, and providing user feedback to form data in a non-blocking manner.
Indeed, compare the pure callback form of doing something after loading CodeMirror in JS mode asynchronously (apologies, I've not used jQuery in a while):
/* assume getScript has signatu...
What is the right way to override a setter method in Ruby on Rails?
...Rails 4.2 due to this change: github.com/rails/rails/commit/… Previously form helpers would call the untypecast value of the field and not call your custom getter. Now they call your method, and so will produce confusing results in your forms depending on how you're overriding the value.
...
400 vs 422 response to POST of data
...ng on. Let's say I have a end point that allows POST'ing purchases in JSON format. It looks like this:
9 Answers
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Simple C example of doing an HTTP POST and consuming the response
...reak style) so that's why those lines have \r\n at the end.
A URL has the form of http://host:port/path?query_string
There are two main ways of submitting a request to a website:
GET: The query string is optional but, if specified, must be reasonably short. Because of this the header could just ...
What is the difference between statically typed and dynamically typed languages?
...hat type each variable is (e.g.: Java, C, C++); other languages offer some form of type inference, the capability of the type system to deduce the type of a variable (e.g.: OCaml, Haskell, Scala, Kotlin)
The main advantage here is that all kinds of checking can be done by the compiler, and therefor...
Are (non-void) self-closing tags valid in HTML5?
...HTML failed before HTML 5 was even on the horizon, and you can't have long form empty elements because browser error correction that predated XHTML would do things like treating </br> as <br> so <br></br> would be a double line break. (and backwards compatibility with real wo...