In this tutorial we're going to build a set of parser combinators.
We'll answer the above question in 2 steps.
- What is a parser?
- and, what is a parser combinator?
So first question: What is parser?
| import os | |
| from dotenv import load_dotenv | |
| import requests | |
| from slack_sdk import WebClient | |
| from slack_sdk.errors import SlackApiError | |
| from datetime import date | |
| from collections import defaultdict | |
| import modal | |
| load_dotenv() |
| // This is an example of how to fetch external data in response to updated props, | |
| // If you are using an async mechanism that does not support cancellation (e.g. a Promise). | |
| class ExampleComponent extends React.Component { | |
| _currentId = null; | |
| state = { | |
| externalData: null | |
| }; |
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <libproc.h> | |
| // Uses proc_pidinfo from libproc.h to find the parent of given pid. | |
| // Call this repeatedly until ppid(pid) == pid to get ancestors. | |
| int ppid(pid_t pid) { | |
| struct proc_bsdinfo info; | |
| proc_pidinfo(pid, PROC_PIDTBSDINFO, 0, &info, sizeof(info)); | |
| return info.pbi_ppid; |