解析文件，忽略注释和空白行

Question

As the title says, I am trying to parse a file but ignore comments (started with #) or blank lines. I have tried to make a system for this, yet it always seems to ignore that it should be ignoring comments and/or blank lines.

lines := strings.Split(d, "
")
var output map[string]bool = make(map[string]bool)

for _, line := range lines {
    if strings.HasPrefix(line, "#") != true {
        output[line] = true
    } else if len(line) > 0 {
        output[line] = true
    }
}

When run (this is part of a function), it outputs the following

This is the input ('d' variable):
Minecraft
Zerg Rush
Pokemon

# Hello

This is the output when printed ('output' variable):

map[Minecraft:true Zerg Rush:true Pokemon:true :true # Hello:true]

My issue here is that it still keeps the "" and "# Hello" values, meaning that something failed, something I haven't been able to figure out.

So, what am I doing wrong that this keeps the improper values?

Answer 1

len(line) > 0 will be true for the "# Hello" line, so it will get added to output.

Currently, you are adding lines that either don't start with a # or are not empty. You need to only add lines that satisfy both conditions:

if !strings.HasPrefix(line, "#") && len(line) > 0 {
    output[line] = true
}