August 2012
Intermediate to advanced
624 pages
17h 11m
Polish
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12.1. Na początek coś łatwego — wyświetlanie myślników
Problem
Zadanie wyświetlenia linii zbudowanej ze znaków myślnika nie wydaje się skomplikowane — i takim nie jest. Niemniej po przygotowaniu wstępnego skryptu okazuje się, że warto go rozbudować o dodatkowe opcje. Czy uwzględnić możliwość definiowania długości linii? Czy pozwolić na zastąpienie znaku myślnika symbolem podanym przez użytkownika? Twierdząca odpowiedź na każde tego typu pytanie powoduje zwiększenie liczby funkcji. Czy można zatem przygotować kod, który uwzględni powyższe założenia, ale jednocześnie nie będzie zanadto skomplikowany.
Rozwiązanie
Oto przykład skryptu:
1 #!/usr/bin/env bash 2 # plik receptury: dash 3 # dash - wyświetlenie wiersza znaków myślnika 4 # opcje: # liczba znaków ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.