I am trying to do a simple condition check, but it doesn’t seem to work. If $# is equal to 0 or is greater than 1 then say hello. I have tried the following syntax with no success: if [ “$#” == 0 -o “$#” > 1 ] ; then echo “hello” fi if [ … Read more
This question already has answers here: if/else in a list comprehension (12 answers) Closed 5 years ago. I have a list l: l = [22, 13, 45, 50, 98, 69, 43, 44, 1] For numbers above 45 inclusive, I would like to add 1; and for numbers less than it, 5. I tried [x+1 for … Read more
I understand how this construct works: for i in range(10): print(i) if i == 9: print(“Too big – I’m giving up!”) break else: print(“Completed successfully”) But I don’t understand why else is used as the keyword here, since it suggests the code in question only runs if the for block does not complete, which is … Read more
I want to do a condition in an AngularJS template. I fetch a video list from the Youtube API. Some of the videos are in 16:9 ratio and some are in 4:3 ratio. I want to make a condition like this: if video.yt$aspectRatio equals widescreen then element’s attr height=”270px” else element’s attr height=”360px” I’m iterating … Read more
This question already has answers here: How to compare strings in Bash (11 answers) Closed 3 years ago. I’m trying to get an if statement to work in Bash (using Ubuntu): #!/bin/bash s1=”hi” s2=”hi” if [“$s1” == “$s2”] then echo match fi I’ve tried various forms of the if statement, using [[“$s1” == “$s2”]], with … Read more
I’m trying to make a function that will compare multiple variables to an integer and output a string of three letters. I was wondering if there was a way to translate this into Python. So say: x = 0 y = 1 z = 3 mylist = [] if x or y or z == … Read more
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 1 year ago. Improve this question Sometimes I break long conditions in ifs onto several lines. The most obvious way to do … Read more
A coworker claimed recently in a code review that the [[ ]] construct is to be preferred over [ ] in constructs like if [ “`id -nu`” = “$someuser” ] ; then echo “I love you madly, $someuser” fi He couldn’t provide a rationale. Is there one? 9 s 9 [[ has fewer surprises and … Read more
I’m using Angular and I want to use *ngIf else (available since version 4) in this example: <div *ngIf=”isValid”> content here … </div> <div *ngIf=”!isValid”> other content here… </div> How can I achieve the same behavior with ngIf else? 19 s 19 Angular 4 and 5: Using else: <div *ngIf=”isValid;else other_content”> content here … </div> … Read more
This question already has answers here: Does Python have a ternary conditional operator? (32 answers) Closed 2 years ago. The community reviewed whether to reopen this question 5 months ago and left it closed: Original close reason(s) were not resolved I’m just getting into Python and I really like the terseness of the syntax. However, … Read more
