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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | 2x 2x 2x 2x 2x 2x 4x 2x 2x 2x 4x 2x 2x 1x 1x | function cx() {
let str = '',
i = 0,
arg
for (; i < arguments.length; ) {
if ((arg = arguments[i++]) && typeof arg === 'string') {
str && (str += ' ')
str += arg
}
}
return str
}
export { cx } |