Does C++ support named parameters? No, because this feature has not been introduced to the standard. The feature didn’t (and doesn’t) exist in C either, which is what C++ was originally based on. Will it support it in a future version of the C++ standard? A proposal was written for it. But the proposal was … Read more
You can use Object destructuring introduced in ES6 to archieve the desired behavior: reference. TypeScript is able to transpile this feature for usage with ES5 to target older browsers. However, as of ES6, this is also perfectly valid JavaScript. Basically, it looks like this: constructor({ year, month, day}) and is invoked, for instance, as new … Read more
PHP 8.0 added support for named arguments with the acceptance of an RFC. Named arguments are passed by prefixing the value with the parameter name followed by a colon. Using reserved keywords as parameter names is allowed. The parameter name must be an identifier, specifying dynamically is not allowed. E.g. to pass just the 3rd … Read more
It’s possible to force the callers to always use named args. I wouldn’t do this in most circumstances because it’s rather ugly, but it depends on how badly safe method usage is needed. Here is the solution: int RegisterUser( #if DEBUG int _ = 0, #endif string nameFirst = null, string nameLast = null, string … Read more
Why doesn’t C++ support named parameters? Because such feature has not been introduced to the standard. The feature didn’t (and doesn’t) exist in C either, which is what C++ was originally based on. Will it support it in a future version of the C++ standard? A proposal was written for it. But the proposal was … Read more
The method call should be test(a: ‘1’, b: ‘2’) instead of test([a: ‘1’, b: ‘2’]). Please check the named parameters section for methods in the docs.
How about Query q = em.createQuery( “SELECT x FROM org.SomeTable x WHERE x.someString LIKE :someSymbol” ); q.setParameter(“someSymbol”, “%someSubstring%”); I’m pretty sure I once solved your problem like that.
Update for Swift 2.0: Now functions behave identically to methods, and for both, by default: the first parameter has no external name; and the other parameters have an external name identical to the internal name. Other than that, the rules below still apply, except that the # shorthand syntax is now gone. Here’s a more … Read more
JDBC does not support named parameters. Unless you are bound to using plain JDBC (which causes pain, let me tell you that) I would suggest to use Springs Excellent JDBCTemplate which can be used without the whole IoC Container. NamedParameterJDBCTemplate supports named parameters, you can use them like that: NamedParameterJdbcTemplate jdbcTemplate = new NamedParameterJdbcTemplate(dataSource); MapSqlParameterSource … Read more
It does work, but only in Python 3. See PEP 3102. From glancing over the “what’s new” documents, it seems that there is no 2.x backport, so you’re out of luck. You’ll have to accept any keyword arguments (**kwargs) and manually parse it. You can use d.get(k, default) to either get d[k] or default if … Read more