Pure Programmer
Project: Character Types
We can group characters in the Unicode character set by attributes that the characters have. Is it a letter? Is it a whitespace character? Is it a control character? Write a program that defines a string of interesting characters. Then iterate on that string, character by character, printing out the character and its attributes using the character typing functions.
Output
$ rustc CharacterTypes.rs
error[E0425]: cannot find value `Utils` in this scope
--> CharacterTypes.rs:14:32
|
14 | print!("Processing: 0x{} ", Utils.toBase(u32(c), 16));
| ^^^^^ not found in this scope
error[E0425]: cannot find function `isctrl` in this scope
--> CharacterTypes.rs:13:6
|
13 | if isctrl(c) || isspace(c) {
| ^^^^^^ not found in this scope
error[E0425]: cannot find function `isspace` in this scope
--> CharacterTypes.rs:13:19
|
13 | if isctrl(c) || isspace(c) {
| ^^^^^^^ not found in this scope
error[E0423]: expected function, found builtin type `u32`
--> CharacterTypes.rs:14:45
|
14 | print!("Processing: 0x{} ", Utils.toBase(u32(c), 16));
| ^^^ not a function
error[E0425]: cannot find function `isalpha` in this scope
--> CharacterTypes.rs:18:6
|
18 | if isalpha(c) {
| ^^^^^^^ not found in this scope
error[E0425]: cannot find function `toupper` in this scope
--> CharacterTypes.rs:19:27
|
19 | print!("isalpha {}{}", toupper(c), tolower(c));
| ^^^^^^^ not found in this scope
error[E0425]: cannot find function `tolower` in this scope
--> CharacterTypes.rs:19:39
|
19 | print!("isalpha {}{}", toupper(c), tolower(c));
| ^^^^^^^ not found in this scope
error[E0425]: cannot find function `isalnum` in this scope
--> CharacterTypes.rs:22:6
|
22 | if isalnum(c) {
| ^^^^^^^ not found in this scope
error[E0425]: cannot find function `isdigit` in this scope
--> CharacterTypes.rs:29:6
|
29 | if isdigit(c) {
| ^^^^^^^ not found in this scope
error[E0425]: cannot find function `isspace` in this scope
--> CharacterTypes.rs:36:6
|
36 | if isspace(c) {
| ^^^^^^^ not found in this scope
error[E0425]: cannot find function `ispunct` in this scope
--> CharacterTypes.rs:43:6
|
43 | if ispunct(c) {
| ^^^^^^^ not found in this scope
error[E0425]: cannot find function `isctrl` in this scope
--> CharacterTypes.rs:50:6
|
50 | if isctrl(c) {
| ^^^^^^ not found in this scope
error: aborting due to 12 previous errors
Some errors have detailed explanations: E0423, E0425.
For more information about an error, try `rustc --explain E0423`.