C Style Format
Simple placeholder
// String
yuan.string.format("Hello %s! My name is %s.", "Jack", "Eric");
// OUTPUT:
// Hello Jack! My name is Eric.
// Number
yuan.string.format("Jack is %d years old.", 10);
Size-fixed placeholder
yuan.string.format("Name: %10s", "Jack");
// OUTPUT:
// Name: ______Jack
yuan.string.format("Name: %-10s", "Jack");
// OUTPUT:
// Name: Jack______
Size-fixed placeholder, what happens when string size exceeds
yuan.string.format("%3s", "abcdefg");
// OUTPUT:
// abc
yuan.string.format("%-3s", "abcdefg");
// OUTPUT:
// abc
Size-fixed placeholder and cutter
yuan.string.format("%7.3s", "abcdefg");
// OUTPUT:
// ____abc
yuan.string.format("%-7.3s", "abcdefg");
// OUTPUT:
// abc____
Integer placeholder
| Placeholder | Number | Output | Remark |
|---|---|---|---|
| %d | 10.01 | 10 | integer |
| %+d | 10.01 | +10 | with +/- sign |
| %,d | 10000 | 10,000 | with thousand signals |
| %4d | 100 | _100 | size fixed |
| %06d | 100 | 000100 | size fixed, with leading 0 |
| %-4d | 100 | 100_ | right aligned, size fixed |
| %-4d | 10000 | 1e4_ | scientific notation (SN) when size exceeds |
| %-2d | 10000 | __ | whitespaces when size exceeds (event in SN) |
| %+-2d | 10000 | +_ | only +/- sign when size exceeds (event in SN) |
ATTENTION: Here the underline sign _ represents