# 論理演算子. And

# Bash

[ -a ] または [] && []

if [ "$a" = "$b" -a "$c" = "$d" ]; then
if [ "$a" = "$b" ] && [ "$c" = "$d" ]; then

# C

&&

# C++

&&

# C#

&&

# Java

&&

# PowerShell

-and

# Python

and

# Ruby

&&

[ 📩 ご意見 ]