This project is a tiny compiler for a very simple language consisting of boolean expression.
The language has two constants: 1
for true and 0
for false, and 4 logic gates:
!
(not), &
(and), |
(or), and ^
(xor).
It can also use parentheses to manage priorities.
Here is its grammar in BNF format:
expr ::= "0" | "1"
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with | |
dau as ( | |
-- This part of the query can be pretty much anything. | |
-- The only requirement is that it have three columns: | |
-- dt, user_id, inc_amt | |
-- Where dt is a date and user_id is some unique identifier for a user. | |
-- Each dt-user_id pair should be unique in this table. | |
-- inc_amt represents the amount of value that this user created on dt. | |
-- The most common case is | |
-- inc_amt = incremental revenue from the user on dt |
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#!/usr/bin/env python | |
import cv2 | |
import numpy as np | |
def main(): | |
cap = cv2.VideoCapture(0) | |
while(cap.isOpened()): | |
ret, img = cap.read() | |
skinMask = HSVBin(img) |
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#!/usr/bin/env python | |
# -*- coding: utf-8 -*- | |
""" | |
pip install networkx distance pattern | |
In Flipboard's article[1], they kindly divulge their interpretation | |
of the summarization technique called LexRank[2]. |
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#!/usr/bin/env python | |
# -*- coding: utf-8 -*- | |
""" | |
pip install networkx distance pattern | |
In Flipboard's article[1], they kindly divulge their interpretation | |
of the summarization technique called LexRank[2]. |
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; originally posted on https://github.com/rodricios/eatiht/issues/2#issuecomment-67769343 | |
(import | |
[collections [Counter]] | |
[cookielib [CookieJar]] | |
[lxml.etree [HTML tostring]] | |
[urllib2 [build-opener HTTPCookieProcessor]]) | |
(def *min-length* 20) | |
(def *text-xpath* (+ "//body//*[not(self::script or self::style or self::i or self::b or self::strong or self::span or self::a)]/text()[string-length(normalize-space()) > " (str *min-length*) "]/..")) |
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#!/bin/bash | |
url=http://redefininggod.com | |
webarchive=https://web.archive.org | |
wget="wget -e robots=off -nv" | |
tab="$(printf '\t')" | |
additional_url=url.list | |
# Construct listing.txt from url.list | |
# The list of archived pages, including some wildcard url |
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# (C) Kyle Kastner, June 2014 | |
# License: BSD 3 clause | |
import scipy.stats as st | |
import numpy as np | |
class gmmhmm: | |
#This class converted with modifications from https://code.google.com/p/hmm-speech-recognition/source/browse/Word.m | |
def __init__(self, n_states): | |
self.n_states = n_states |
#!/bin/ruby --verion => 2.0.0-p353
In Ruby, self is a special variable that always references the current object.
- Inside class or module definition, self refer to the Class or Module object.
- Inside instance method, self refer to future instance object.
- Inside class method, self refer to the class.i
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