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How do I escape curly brackets in golangs template system?
Assume I want to print {{Hello World}}:
var buf bytes.Buffer
// tpl := template.Must(template.New("").Parse(`{{ print "{{Hello World}}"}}`)) // this is working
tpl := template.Must(template.New("").Parse(`\{\{Hello World\}\}`)) // this is not
if err := tpl.Execute(&buf, nil); err != nil {
panic(err)
}
if buf.String() != "{{Hello World}}" {
panic("Unexpected")
}
go playground
940
To match literal curly braces, you have to escape them with \ . However, Apex Code uses \ as an escape, too, so you have to "escape the escape". You'll need to do this almost every time you want to use any sort of special characters in your regexp literally, which will happen more frequently than not.
In writing, curly brackets or braces are used to indicate that certain words and/or sentences should be looked at as a group. Here is an example: Hello, please pick your pizza toppings {chicken, tomatoes, bacon, sausage, onion, pepper, olives} and then follow me.
After entering the curly brace and the macro menu pops up, press the ESC key and the menu will go away leaving the curly brace there. However, if you put in a closing brace it will still try to convert it to a wiki markup macro, so copy/paste will be your best bet in that case.
Different programming languages have various ways to delineate the start and end points of a programming structure, such as a loop, method or conditional statement. For example, Java and C++ are often referred to as curly brace languages because curly braces are used to define the start and end of a code block.
You can use a raw string constant.
tpl := template.Must(template.New("").Parse("{{`{{Hello World}}`}}"))
https://play.golang.org/p/FmPo6uMUBp8
125
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