Webconst before a function means that the return parameter is const, which only really makes sense if you return a reference or a pointer. const after the function means that the function is part of a class and cant change any members of that class. Also const objects are only allowed to call these const functions. 82. jstaminax • 2 yr. ago. WebFeb 10, 2024 · Explanation. The constexpr specifier declares that it is possible to evaluate the value of the function or variable at compile time. Such variables and functions can then be used where only compile time constant expressions are allowed (provided that appropriate function arguments are given). A constexpr specifier used in an object …
Const member functions in C++ - GeeksforGeeks
WebApr 14, 2013 · C++ class methods have an implicit this parameter which comes before all the explicit ones. So a function declared within a class like this: class C { void f (int x); … WebApr 29, 2024 · const myFunction = param => doSomething (param) Thanks to this short syntax, arrow functions encourage the use of small functions. Implicit return. Arrow functions allow you to have an implicit return: … do virgo and scorpio get along friendship
A tutorial to JavaScript Arrow Functions - Flavio Copes
WebMar 28, 2024 · In the following example, we correctly declare a variable using the const keyword before accessing it. function test {// Declaring variable foo const foo = 33; console. log (foo); // 33} test (); In this example, the imported variable a is asynchronously accessed, so both modules are evaluated before the access to a occurs. WebOct 6, 2024 · The ensureDirSync () function is the synchronous version of ensureDir () function. The function makes sure that the directory exists, if the directory structure does not exist it will be created by the function. mkdirsSync () and mkdirpSync () can also be used in place of ensureDirSync () and the result will be same. WebApr 5, 2024 · The API design of promises makes this great, because callbacks are attached to the returned promise object, instead of being passed into a function. Here's the magic: the then () function returns a new promise, different from the original: const promise = doSomething(); const promise2 = promise.then(successCallback, failureCallback); civil war m1832 short artillery sword