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Shell/Bash 2021-08-30 05:24:02
awk round numbers up
# Basic syntax: awk 'BEGIN {printf "%.0f\n", $field_to_round}' input_file # Where: - %.0f specifies that the field_to_round will have a precision # of 0 digits (i.e. it will be rounded to an integer). # Example usage: awk 'BEGIN {printf &quo... Add solution -
SQL 2021-08-30 05:03:01
mysql bidirectional composite primary key
CREATE TRIGGER uinsert BEFORE INSERT ON tbl_challenger FOR EACH ROW SET NEW.u0 = LEAST(NEW.host,NEW.challenger), NEW.u1 = GREATEST(NEW.host,NEW.challenger); #same for update CREATE UNIQUE INDEX uniqueness ON tbl_challenger(u0,u1); Add solution -
Python 2021-08-30 03:38:02
python person name matching
import numpy as np def levenshtein_ratio_and_distance(s, t, ratio_calc = False): """ levenshtein_ratio_and_distance: Calculates levenshtein distance between two strings. If ratio_calc = True, the function computes the ... Add solution -
PHP 2021-08-30 00:16:02
iteration in php
<?php class MyClass { public $var1 = 'value 1'; public $var2 = 'value 2'; public $var3 = 'value 3'; &... Add solution -
Python 2021-08-29 23:55:01
django how to set a navbar active
# navbar_demo/pages/views.py... '''We will pass a unique variable for each page whose value will be 'active' to make a page active in navbar when it call.''' def index(request): context = {"home_page": "active"} # new info he... Add solution