tame.misc source code

1 module tame.misc;
2 
3 import std.traits;
4 
5 /// Returns: true if an aray has an element
6 bool hasElement(T)(T[] array, T element) {
7 	bool r;
8 	foreach (cur; array) {
9 		if (cur == element) {
10 			r = true;
11 			break;
12 		}
13 	}
14 	return r;
15 }
16 ///
17 unittest {
18 	assert([0, 1, 2].hasElement(2));
19 	assert(![0, 1, 2].hasElement(4));
20 }
21 
22 /// Returns: true if a string is a number
23 auto isNum(string s, bool allowDecimalPoint = true) {
24 	if (!s.length)
25 		return false;
26 	bool hasDecimalPoint = !allowDecimalPoint;
27 	if (s[0] == '-')
28 		s = s[1 .. $];
29 	foreach (c; s) {
30 		if (c == '.' && !hasDecimalPoint) {
31 			hasDecimalPoint = true;
32 		} else if (c < '0' || c > '9')
33 			return false;
34 	}
35 	return true;
36 }
37 
38 /// Returns: true if all characters in a string are alphabets, uppercase, lowercase, or both
39 auto isAlphabet(string s) {
40 	foreach (c; s) {
41 		if ((c < 'a' || c > 'z') && (c < 'A' || c > 'Z'))
42 			return false;
43 	}
44 	return true;
45 }
46 ///
47 unittest {
48 	assert("aBcDEf".isAlphabet == true);
49 	assert("ABCd_".isAlphabet == false);
50 	assert("ABC12".isAlphabet == false);
51 }
52 
53 /// Returns: true if the string starts with a white character
54 bool startsWithWhite(S)(S s) if (isArray!S) {
55 	import std.ascii;
56 
57 	return s.length && s[0].isWhite;
58 }