<p>thing, err := MakeThing()</p>
<p>how to make func MakeThing to return data or error ?</p>
<p>thanks and regards</p>
<hr/>**评论：**<br/><br/>mixedCase_: <pre><p>Hi! It seems you're new to Go. I heavily advise you to fully read and comprehend these three links from the documentation at least once in order to save yourself a lot of guessing how things work in Go:</p>
<p><a href="https://tour.golang.org/welcome/2" rel="nofollow">https://tour.golang.org/welcome/2</a><br/>
<a href="https://golang.org/doc/code.html" rel="nofollow">https://golang.org/doc/code.html</a><br/>
<a href="https://golang.org/doc/effective_go.html" rel="nofollow">https://golang.org/doc/effective_go.html</a></p>
<p>I promise you will not be wasting your time reading them!</p></pre>bussiere: <pre><p>thanks a lot i will :)</p></pre>DualRearWheels: <pre><p>This should be voted to top. Question is most basic one, good reading of manual should solve it along with a lot of other things new Go users could get stuck with.</p>
<p>There is no replacement for learning from docs in correct order. Knowledge is layered, if you lack good foundations then process will be slow and frustrating and final products will be bad.</p></pre>JokerSp3: <pre><p>the idiomatic way would be to do something like</p>
<pre><code>func MakeThing() (thing, error) {
t := thing{}
if condition {
return t, errors.New("this is an error")
}
return t, nil
}
</code></pre></pre>bussiere: <pre><p>thanks :)</p></pre>caseynashvegas: <pre><p>Beat me in by a second!</p></pre>nesigma: <pre><p>I usually find myself doing this:</p>
<pre><code>func MakeThing() (*thing, error) {
t := &thing{}
if condition {
return nil, errors.New("this is an error")
}
return t, nil
}
</code></pre>
<p>When is it appropriate to use each case?</p></pre>caseynashvegas: <pre><p>If I am understanding your question, the following should playground example might answer it.<br/>
<a href="https://play.golang.org/p/GETLz1LgU8" rel="nofollow">https://play.golang.org/p/GETLz1LgU8</a></p></pre>bussiere: <pre><p>thanks for your time</p></pre>
