    {{with .Inner}}
      Outer: {{$.OuterValue}}
      Inner: {{.InnerValue}}
    {{end}}

`$` is documented in the [text/template](https://golang.org/pkg/text/template/) docs:

&gt; When execution begins, $ is set to the data argument passed to Execute, that is, to the starting value of dot.

You can save the calling scope with a variable:

    {{ $save := . }}
    {{ with .Inner }}
      Outer: {{ $save.OuterValue }}
      Inner: {{ .InnerValue }}
    {{ end }}


[WWDC 2012 session 706 - Networking Best Practices][1] explains [HTTP Pipelining][2].  

- By default [its disabled][3] on iOS
- In the talk its described it as a huge performance win.

Why might you not want to use it?

![pipelining][4]


  [1]: https://developer.apple.com/videos/wwdc/2012/?id=706
  [2]: http://en.wikipedia.org/wiki/HTTP_pipelining
  [3]: https://developer.apple.com/documentation/foundation/nsmutableurlrequest/1412705-httpshouldusepipelining
  [4]: http://i.stack.imgur.com/MbAOA.png

What are the disadvantage(s) of using HTTP pipelining?

I was recently working on my application messing around in the info.plist section, and since that my application will not run on my test device:
&gt;file &#39;project.pch&#39; has been modified since the precompiled header was built
 
Something to note is that the app runs fine in the simulator.

---
Edit: Now I am getting this error instead of the other one:
&gt;No such file or directory (/Users/Me/Library/Developer/Xcode/DerivedData/MyProject-abcdefghijklmnopqrstuvwxyz/Build/Products/Debug-iphoneos/MyApp./MyApp)

![No such file or directory error][1]

How to regenerate the info.plist file?

  [1]: https://i.stack.imgur.com/8h09T.png

Fixing file &#39;project.pch&#39; has been modified since the precompiled header was built error in Xcode

When inside a `with` or `range`, the scope of `.` is changed. How do you access the calling scope?

In a template how do you access an outer scope while inside of a &quot;with&quot; or &quot;range&quot; scope?

<p>When inside a <code>with</code> or <code>range</code>, the scope of <code>.</code> is changed. How do you access the calling scope?</p>


I have a go project that is starting to become more complex, and want to lay the filesystem out in such a way to reduce pain.

Are there some good examples out there of what makes sense?

What is a sensible way to layout a Go project

How to get an &quot;E&quot; output rather than 69?

    package main

    import &quot;fmt&quot;

    func main() {
	    fmt.Print(&quot;HELLO&quot;[1])
    }

Does Golang have function to convert a char to byte and vice versa?

How to index characters in a Golang string?

I&#39;m trying to create and use a custom package in Go. It&#39;s probably something very obvious but I cannot find much information about this. Basically, I have these two files in the same folder:

**mylib.go**

    package mylib
    
    type SomeType struct {
    	
    }

**main.go**

    package main
    
    import (
    	&quot;mylib&quot;
    )
    
    func main() {
    	
    }

When I try to `go run main.go`, I get this error:

    main.go:4:2: import &quot;mylib&quot;: cannot find package

I&#39;ve tried to run `go build mylib.go` first but it doesn&#39;t seem to be doing anything (no file generated, no error message). So any idea how I could do this?

How to use custom packages

What benefits arise from naming a function&#39;s return parameter(s)?

    func namedReturn(i int) (ret int) {
        ret = i
        i += 2
        return
    }

    func anonReturn(i int) int {
        ret := i
        i += 2
        return ret
    }

Why would return parameters be named?

I have code that looks like this:

    u := make([]byte, 16)
    _, err := rand.Read(u)
    if err != nil {
    	return
    }
    
    u[8] = (u[8] | 0x80) &amp; 0xBF // what does this do?
    u[6] = (u[6] | 0x40) &amp; 0x4F // what does this do?

    return hex.EncodeToString(u)

It returns a string with a length of 32, but I don&#39;t think it is a valid UUID. If it is a real UUID, why is it a UUID, and what is the purpose of the code that modifies the value of `u[8]` and `u[6]`.

Is there a better way of generating UUIDs?

Is there a method to generate a UUID with go language

I have this struct :

    const (
    	paragraph_hypothesis = 1&lt;&lt;iota
    	paragraph_attachment = 1&lt;&lt;iota
    	paragraph_menu       = 1&lt;&lt;iota
    )
    
    type Paragraph struct {
    	Type int // paragraph_hypothesis or paragraph_attachment or paragraph_menu
    }

I want to display my paragraphs in a `Type` dependent way.

The only solution I found was based on dedicated functions like `isAttachment` testing the `Type` in Go and nested `{{if}}` :


    {{range .Paragraphs}}
        {{if .IsAttachment}}
        	-- attachement presentation code  --
        {{else}}{{if .IsMenu}}
        	-- menu --
        {{else}}
        	-- default code --
        {{end}}{{end}}
    {{end}}

In fact I have more types, which makes it even weirder, cluttering both the Go code with `IsSomething` functions and the template with those `{{end}}`.

What&#39;s the clean solution ? Is there some `switch` or `if/elseif/else` solution in go templates ? Or a completely different way to handle these cases ?


Switch or if/elseif/else inside golang HTML templates

I’m using AngularJS as the front-end JS library, with Go templates within Revel framework to to generate the markup on the back-end.

But both Go and Angular use `{{` and `}}` for delimiters in their templates. How can I escape them in Go to pass them to AngularJS?

How do I escape “{{” and “}}” delimiters in Go templates?

I am trying to display a list gym classes (Yoga, Pilates etc). For each class type there are several classes, so I want to group all the Yoga classes, and all the Pilates classes and so on.

I made this function to take a slice and make a map of it

    func groupClasses(classes []entities.Class) map[string][]entities.Class {
    	classMap := make(map[string][]entities.Class)
    	for _, class := range classes {
    		classMap[class.ClassType.Name] = append(classMap[class.ClassType.Name], class)
    	}
    	return classMap
    }

The problem is now how can I iterate through it, according to http://golang.org/pkg/text/template/, you need to access it in `.Key` format, I don&#39;t know the keys (unless I also passed a slice of keys into the template). How do I unpack this map in my view.

All I have currently is 

    {{ . }} 

which displays something like:

    map[Pilates:[{102 PILATES ~/mobifit/video/ocen.mpg 169 40 2014-05-03 23:12:12 +0000 UTC 2014-05-03 23:12:12 +0000 UTC 1899-12-30 00:00:00 +0000 UTC {PILATES Pilates 1 2014-01-22 21:46:16 +0000 UTC} {1 leebrooks0@gmail.com password SUPERADMIN Lee Brooks {Male true} {1990-07-11 00:00:00 +0000 UTC true} {1.85 true} {88 true} 2014-01-22 21:46:16 +0000 UTC {0001-01-01 00:00:00 +0000 UTC false} {0001-01-01 00:00:00 +0000 UTC false} {0001-01-01 00:00:00 +0000 UTC false}} [{1 Mat 2014-01-22 21:46:16 +0000 UTC}]} {70 PILATES ~/mobifit/video/ocen.mpg 119 66 2014-03-31 15:12:12 +0000 UTC 2014-03-31 15:12:12 +0000 UTC 1899-12-30 00:00:00 +0000 UTC 

Iterating through map in template

How can I look up the value of a map by using a variable key without iterating? 

So one can lookup a constant key on variable map $x with `$x.key1`, but is it possible to do `amap.$key`?
 

Access a map value using a variable key in a Go template

In golang&#39;s template/html package, I can use `{{ if .loggedIn }}` to check if logged in is true.

How do I check if .loggedIn is false without using ne or eq?


----------


For example, I am looking for something like

    {{ if !.loggedIn }}
    &lt;h1&gt;Not logged in&lt;/h1&gt;
    {{ end }}

Content Type	Original Author	Original Content on Stackoverflow
Question	Randy Proctor	View Question on Stackoverflow
Solution 1 - Go	Testuser	View Answer on Stackoverflow
Solution 2 - Go	Randy Proctor	View Answer on Stackoverflow

In a template how do you access an outer scope while inside of a "with" or "range" scope?

Go Problem Overview

Go Solutions

Solution 1 - Go

Solution 2 - Go

Fixing file 'project.pch' has been modified since the precompiled header was built error in Xcode

What are the disadvantage(s) of using HTTP pipelining?

Attributions