Defining environment for enumerate

Question

I often write

\begin{enumerate}
\item [\textbf{1}]
\item [\textbf{2}]
.
.
.
\end{enumerate}

but is there a way to get \item [\textbf{1}] automatically by just putting \item? (I don't want to set a \newcommand, I just want that everytime I put \item yield me a new number in the style \textbf{number}.)

Answer 1

Add this to your preamble:

\usepackage{enumitem}
\setlist[enumerate,1]{label=\arabic*, font=\bfseries}

or

\setlist[enumerate,1]{label=\bfseries\arabic*, ref=\arabic*}

if you want bold labels at the first level of enumerate for the whole document, or just load enumitem and use this for specific environment:

\begin{enumerate}[label=\arabic*, font=\bfseries]
   % or [label=\bfseries\arabic*, ref=\arabic*]
\item first item
\item second item
………………
\end{enumerate}

Answer 2

Or you can create a new environment to do what you want

\documentclass{article}
\usepackage{enumitem}

\newenvironment{mylist}
{\begin{enumerate}[label=\textbf{\arabic*}]}
{\end{enumerate}}

\begin{document}

\begin{enumerate}[label=\textbf{\arabic*}]
\item First item
\item Second item
\end{enumerate}

\begin{mylist}
\item First item
\item Second item
\end{mylist}

\end{document}

Answer 3

Using the enumitem package, \usepackage{enumitem}:

If you need this behavior locally you can directly insert in the options to enumerate the specifications of your labels. If you need it global, then set in the preamble the same as Bernard's answer, \setlist[enumerate,1]{label=\bfseries\arabic*}. You can remove or leave the dot as required or add spaces where needed.

\documentclass{article}
\usepackage{enumerate}
\begin{document}
\begin{enumerate}[{\bfseries 1.}]
  \item some item 1
  \item some item 2
  \item some item 3
  \item some item 4
\end{enumerate}
\end{document}

This approach is particularly easy if you don't want to remember names, e.g.,

[\bfseries 1.] % for Arabic numbers
[\bfseries I.] % for Capital Roman 
[\bfseries A.] % for Capital alphanumeric, ...etc.