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15 lines
300 B
Plaintext
15 lines
300 B
Plaintext
fun StringBuilder.takeFirst(): Char {
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if (this.length() == 0) return 0.chr
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val c = this.charAt(0)
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this.deleteCharAt(0)
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return c
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}
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fun foo(expr: StringBuilder): Int {
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val c = expr.takeFirst()
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when(c) {
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0.chr -> throw Exception("zero")
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else -> throw Exception("nonzero" + c)
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}
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}
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