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Remove no-std feature and rename stdlib to no_stdlib.

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Stephen Chung
2020-03-05 10:18:46 +08:00
parent 347f6d607a
commit c9395049e2
4 changed files with 27 additions and 25 deletions
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18
README.md
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@@ -33,6 +33,16 @@ to use the latest version.
Beware that in order to use pre-releases (alpha and beta) you need to specify the exact version in your `Cargo.toml`.
## Optional Features
### `debug_msgs`
Print debug messages to stdout (using `println!`) related to function registrations and function calls.
### `no_stdlib`
Exclude the standard library of utility functions in the build, and only include the minimum necessary functionalities.
## Related
Other cool projects to check out:
@@ -601,7 +611,7 @@ println!(result); // prints "Runtime error: 42 is too large! (line 5, position
You can create arrays of values, and then access them with numeric indices.
The following standard functions operate on arrays:
The following functions (defined in the standard library but excluded if you use the `no_stdlib` feature) operate on arrays:
* `push` - inserts an element at the end
* `pop` - removes the last element and returns it (() if empty)
@@ -699,7 +709,7 @@ let x = 0o777; // i64 in oct
let x = 0b1010_1111; // i64 in binary
```
Conversion functions:
Conversion functions (defined in the standard library but excluded if you use the `no_stdlib` feature):
* `to_int` - converts an `f32` or `f64` to `i64`
* `to_float` - converts an integer type to `f64`
@@ -714,7 +724,7 @@ let last = "Davis";
let full_name = name + " " + middle_initial + ". " + last;
full_name == "Bob C. Davis";
// String building with different types
// String building with different types (not available if 'no_stdlib' features is used)
let age = 42;
let record = full_name + ": age " + age;
record == "Bob C. Davis: age 42";
@@ -738,7 +748,7 @@ record[4] = '\x58'; // 0x58 = 'X'
record == "Bob X. Davis: age 42 ❤\n";
```
The following standard functions operate on strings:
The following standard functions (defined in the standard library but excluded if you use the `no_stdlib` feature) operate on strings:
* `len` - returns the number of characters (not number of bytes) in the string
* `pad` - pads the string with an character until a specified number of characters