Are the \x/\u/\U character references freely combinable with all string types? No. \x can be used in anything, but \u and \U can only be used in strings that are specifically UTF-encoded. However, for any UTF-encoded string, \u and \U can be used as you see fit. Are all the string types fixed-width, i.e. the … Read more
A C string is a character array that ends with a null terminator. All characters have a symbol table value. The null terminator is the symbol value 0 (zero). It is used to mark the end of a string. This is necessary since the size of the string isn’t stored anywhere. Therefore, every time you … Read more
When you use a string literal the string can be interned, but when you use new String(“…”) you get a new string object. In this example both string literals refer the same object: String a = “abc”; String b = “abc”; System.out.println(a == b); // true Here, 2 different objects are created and they have … Read more
String literals Escaping single quotes ‘ by doubling them up -> ” is the standard way and works of course: ‘user’s log’ — incorrect syntax (unbalanced quote) ‘user”s log’ Plain single quotes (ASCII / UTF-8 code 39), mind you, not backticks `, which have no special purpose in Postgres (unlike certain other RDBMS) and not … Read more
A common technique is for string literals to be put in “read-only-data” section which gets mapped into the process space as read-only (which is why you can’t change it). It does vary by platform. For example, simpler chip architectures may not support read-only memory segments so the data segment will be writable. Rather than try … Read more
you can use always: ‘C:/mydir’ this works both in linux and windows. Other posibility is ‘C:\\mydir’ if you have problems with some names you can also try raw string literals: r’C:\mydir’ however best practice is to use the os.path module functions that always select the correct configuration for your OS: os.path.join(mydir, myfile) From python 3.4 … Read more