identifier

Why does many sites (youtube is good example) generate string of random number and letter instead of using for example the row id? usually its something likes this bla?v=wli4l73Chc0 instead of like bla?id=83934 Is it just to keep it short if you have many rows? Or is there other good things about this? Because i can imagine: bla?id=23934234234 dont look so nice Thanks and cheers They are actually not random strings. Normally they are numbers (usually row IDs) that are encoded in Base-36 encoding (obviously not always the case, but there are many that use it). Why do they use it? Because a Base

What is the difference between static global and non- static global identifier in C++? Alok Save Static limits the scope of the variable to the same translation unit . A static global variable has internal linkage . A non-static global variable has external linkage . Good Read: What is external linkage and internal linkage? A global static variable is only available in the translation unit (i.e. source file) the variable is in. A non-static global variable can be referenced from other source files. If you don't know what the difference is, correct answer will probably be even more confusing to

I need help with getting property of object with String in JS. I have object elements = { element : { date: { day: 'Monday' } } } and i have JS function where input is "element.date.day" . And basically i need to do something like this: function getObjectByStringIdentifier ( stringId ) { return elements[stringId]; } is this possible in JS ? You can do something like this var elements = { element: { date: { day: 'Monday' }, example: { abc: 'hii' } } }; function getObjectByStringIdentifier(stringId) { stringId = stringId.split('.'); // split string using `.` var res = elements; // define res as

In ECMA-262, 3rd edition [PDF] , under section 7.6 ("Identifiers," page 26), we see the following note: The dollar sign is intended for use only in mechanically generated code. That seems reasonable. Many languages commonly used for generating or embedding JavaScript hold a special meaning for $ , and using it in JavaScript identifiers within those languages leads to unexpected behavior . The "mechanically generated clause" appeared in edition 2. In edition 1, it was not present. As of edition 5, it disappears again without explanation, and it remains absent from the working draft of the 6th

This question already has an answer here: converting a variable name to a string in C++ 7 answers Reference a variable by name in C++ by using Symbol Table 2 answers I'm writing a program in C++ that reads in some data from an external file in order to set the values of static variables. Is it possible to convert a string to an object identifier? (e.g. convert the string "CheckBox::Unchecked" into an identifier for the object CheckBox::unchecked) No. If you want to do this, you will have to parse the string manually and do the work yourself. No, it is not, unless you have a mapping method