| // track2 4-bit BCD encode | |
| std::string track2 = ";4088490010739415=24082260007000?3"; | |
| std::string encoded = ""; | |
| uint8_t acc = 0; | |
| bool full = false; | |
| for (uint8_t c : track2) | |
| { | |
| if (!full) | |
| { | |
| acc = c - 0x30; |
| character | decimal | binary | |
|---|---|---|---|
| 0 | 0 | 0000 | |
| 1 | 1 | 0001 | |
| 2 | 2 | 0010 | |
| 3 | 3 | 0011 | |
| 4 | 4 | 0100 | |
| 5 | 5 | 0101 | |
| 6 | 6 | 0110 | |
| 7 | 7 | 0111 | |
| 8 | 8 | 1000 |
| character | binary | |
|---|---|---|
| 0 | 10000 | |
| 1 | 00001 | |
| 2 | 00010 | |
| 3 | 10011 | |
| 4 | 00100 | |
| 5 | 10101 | |
| 6 | 10110 | |
| 7 | 00111 | |
| 8 | 01000 |
| #include <string> | |
| #include <iostream> | |
| char to_upper(char c) | |
| { | |
| // between 97 and 122? | |
| if (c >= 'a' && c <= 'z') | |
| return c ^ 32; // unset 6th bit | |
| return c; |
| $ make | |
| g++ -std=c++11 main.cpp | |
| ./a.out | |
| 123456789abcdef | |
| 123456789ABCDEF |
| $ iex | |
| Erlang/OTP 22 [erts-10.4.3] [source] [64-bit] [smp:12:12] [ds:12:12:10] [async-threads:1] [hipe] | |
| Interactive Elixir (1.11.0-dev) - press Ctrl+C to exit (type h() ENTER for help) | |
| iex(1)> as_binary = &IO.inspect(&1, base: :binary) | |
| #Function<7.91303403/1 in :erl_eval.expr/5> | |
| iex(2)> ?a..?z |> Enum.each(as_binary) | |
| 0b1100001 | |
| 0b1100010 | |
| 0b1100011 |
#Get a value from nested maps
The get_in function can be used to retrieve a nested value in nested maps using a list of keys.
nested_map = %{ name: %{ first_name: "blackode"} } #Example of Nested Map
first_name = get_in(nested_map, [:name, :first_name]) # Retrieving the Key
# Returns nil for missing value
nil = get_in(nested, [:name, :last_name]) # returns nil when key is not present
| #!/usr/bin/env bash | |
| set -o errexit | |
| set -o pipefail | |
| set -o nounset | |
| set -o xtrace | |
| GIT_ROOT=$(git rev-parse --show-toplevel) | |
| pushd "$GIT_ROOT" || exit | |
| CURRENT_BRANCH=$(git rev-parse --abbrev-ref HEAD) |
| { | |
| "detect_indentation": true, | |
| "ensure_newline_at_eof_on_save": true, | |
| "folder_exclude_patterns": "public/assets/source_maps", | |
| "font_size": 20, | |
| "ignored_packages": | |
| [ | |
| ], | |
| "tab_size": 2, | |
| "translate_tabs_to_spaces": true, |
| import weakref | |
| Class MyClass(): | |
| def __init__(self, parent): | |
| self.parent = weakref.ref(parent) |