- 함수 is_int()
1 Java[ | ]
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Java
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public static boolean isInteger(String input) {
try {
Integer.parseInt(input);
return true;
}
catch (NumberFormatException e) {
return false;
}
}
...
// true
System.out.println( isInteger("42") );
System.out.println( isInteger("-1") );
// false
System.out.println( isInteger("-1.0") );
System.out.println( isInteger("3.14") );
2 PHP[ | ]
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PHP
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# bool(true)
var_dump(is_int(23));
# bool(false)
var_dump(is_int("23"));
var_dump(is_int(23.5));
var_dump(is_int(true));
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3 Python[ | ]
Python
Copy
def is_int(x):
return x == int(x)
# True
print( is_int(42) )
print( is_int(-1.0) )
# False
print( is_int(3.14) )
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4 같이 보기[ | ]
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