declaration

问题 I came across the following problem while reading ...just cant get the logic behind this. auto int c; static int c; register int c; extern int c; It is given that the first three are definition and last one is declaration ..how come ? 回答1: The last one with extern does not define storage for c . It merely indicates that c exists somewhere and the linker should be able to resolve it to some global c defined elsewhere. If you compiled and linked a single .c file and tried to use the last c you

问题 I'm using destructuring to declare some variables like this: const { a, b, c } = require('./something'), { e = 'default', f = 'default'} = c; Is there a way to make this into single line? I've tried something like : const { a, b, c = { e = 'default', f = 'default'} } = require('./something'); But it gives me an error: SyntaxError: Invalid shorthand property initializer 回答1: Just replace = with : : const {a, b, c: {e = 'default', f = 'default'}} = require('./something') Demo: const { a, b, c:

问题 I'm using destructuring to declare some variables like this: const { a, b, c } = require('./something'), { e = 'default', f = 'default'} = c; Is there a way to make this into single line? I've tried something like : const { a, b, c = { e = 'default', f = 'default'} } = require('./something'); But it gives me an error: SyntaxError: Invalid shorthand property initializer 回答1: Just replace = with : : const {a, b, c: {e = 'default', f = 'default'}} = require('./something') Demo: const { a, b, c:

问题 I'm using destructuring to declare some variables like this: const { a, b, c } = require('./something'), { e = 'default', f = 'default'} = c; Is there a way to make this into single line? I've tried something like : const { a, b, c = { e = 'default', f = 'default'} } = require('./something'); But it gives me an error: SyntaxError: Invalid shorthand property initializer 回答1: Just replace = with : : const {a, b, c: {e = 'default', f = 'default'}} = require('./something') Demo: const { a, b, c:

问题 I'm using destructuring to declare some variables like this: const { a, b, c } = require('./something'), { e = 'default', f = 'default'} = c; Is there a way to make this into single line? I've tried something like : const { a, b, c = { e = 'default', f = 'default'} } = require('./something'); But it gives me an error: SyntaxError: Invalid shorthand property initializer 回答1: Just replace = with : : const {a, b, c: {e = 'default', f = 'default'}} = require('./something') Demo: const { a, b, c:

来源： https://stackoverflow.com/questions/18240146/unnamed-namespace-vs-global-declaration

来源： https://stackoverflow.com/questions/18240146/unnamed-namespace-vs-global-declaration

来源： https://stackoverflow.com/questions/17454561/declare-variable-name-dynamically

来源： https://stackoverflow.com/questions/17454561/declare-variable-name-dynamically

来源： https://stackoverflow.com/questions/17454561/declare-variable-name-dynamically