[英]How to split string into a dictionary
I have this string 我有这串
string sx="(colorIndex=3)(font.family=Helvetica)(font.bold=1)";
and am splitting it with 并与
string [] ss=sx.Split(new char[] { '(', ')' },
StringSplitOptions.RemoveEmptyEntries);
Instead of that, how could I split the result into a Dictionary<string,string>
? 取而代之的是,如何将结果拆分为
Dictionary<string,string>
? The resulting dictionary should look like: 生成的字典应如下所示:
Key Value
colorIndex 3
font.family Helvetica
font.bold 1
It can be done using LINQ ToDictionary() extension method: 可以使用LINQ ToDictionary()扩展方法来完成:
string s1 = "(colorIndex=3)(font.family=Helvicta)(font.bold=1)";
string[] t = s1.Split(new[] { '(', ')' }, StringSplitOptions.RemoveEmptyEntries);
Dictionary<string, string> dictionary =
t.ToDictionary(s => s.Split('=')[0], s => s.Split('=')[1]);
EDIT : The same result can be achieved without splitting twice: 编辑 :无需分裂两次即可实现相同的结果:
Dictionary<string, string> dictionary =
t.Select(item => item.Split('=')).ToDictionary(s => s[0], s => s[1]);
There may be more efficient ways, but this should work: 可能有更有效的方法,但这应该可行:
string sx = "(colorIndex=3)(font.family=Helvicta)(font.bold=1)";
var items = sx.Split(new[] { '(', ')' }, StringSplitOptions.RemoveEmptyEntries)
.Select(s => s.Split(new[] { '=' }));
Dictionary<string, string> dict = new Dictionary<string, string>();
foreach (var item in items)
{
dict.Add(item[0], item[1]);
}
Randal Schwartz has a rule of thumb : use split when you know what you want to throw away or regular expressions when you know what you want to keep. Randal Schwartz有一个经验法则 :在知道要丢弃的内容时使用split,在知道要保留的内容时使用正则表达式。
You know what you want to keep: 您知道要保留什么:
string sx="(colorIndex=3)(font.family=Helvetica)(font.bold=1)";
Regex pattern = new Regex(@"\((?<name>.+?)=(?<value>.+?)\)");
var d = new Dictionary<string,string>();
foreach (Match m in pattern.Matches(sx))
d.Add(m.Groups["name"].Value, m.Groups["value"].Value);
With a little effort, you can do it with ToDictionary
: 只需一点努力,您就可以使用
ToDictionary
做到这ToDictionary
:
var d = Enumerable.ToDictionary(
Enumerable.Cast<Match>(pattern.Matches(sx)),
m => m.Groups["name"].Value,
m => m.Groups["value"].Value);
Not sure whether this looks nicer: 不知道这看起来是否更好:
var d = Enumerable.Cast<Match>(pattern.Matches(sx)).
ToDictionary(m => m.Groups["name"].Value,
m => m.Groups["value"].Value);
string sx = "(colorIndex=3)(font.family=Helvetica)(font.bold=1)";
var dict = sx.Split(new[] { '(', ')' }, StringSplitOptions.RemoveEmptyEntries)
.Select(x => x.Split('='))
.ToDictionary(x => x[0], y => y[1]);
var dict = (from x in s1.Split(new[] { '(', ')' }, StringSplitOptions.RemoveEmptyEntries)
select new { s = x.Split('=') }).ToDictionary(x => x[0], x => x[1]);
You can try 你可以试试
string sx = "(colorIndex=3)(font.family=Helvetica)(font.bold=1)";
var keyValuePairs = sx.Split(new[] { '(', ')' }, StringSplitOptions.RemoveEmptyEntries)
.Select(v => v.Split('='))
.ToDictionary(v => v.First(), v => v.Last());
You could do this with regular expressions: 您可以使用正则表达式执行此操作:
string sx = "(colorIndex=3)(font.family=Helvetica)(font.bold=1)";
Dictionary<string,string> dic = new Dictionary<string,string>();
Regex re = new Regex(@"\(([^=]+)=([^=]+)\)");
foreach(Match m in re.Matches(sx))
{
dic.Add(m.Groups[1].Value, m.Groups[2].Value);
}
// extract values, to prove correctness of function
foreach(var s in dic)
Console.WriteLine("{0}={1}", s.Key, s.Value);
Often used for http query splitting. 通常用于http查询拆分。
Usage: Dictionary<string, string> dict = stringToDictionary("userid=abc&password=xyz&retain=false");
public static Dictionary<string, string> stringToDictionary(string line, char stringSplit = '&', char keyValueSplit = '=')
{
return line.Split(new[] { stringSplit }, StringSplitOptions.RemoveEmptyEntries).Select(s => s.Split(new[] { keyValueSplit })).ToDictionary(x => x[0], y => y[1]); ;
}
I am just putting this here for reference... 我只是将其放在这里以供参考...
For ASP.net, if you want to parse a string from the client side into a dictionary this is handy... 对于ASP.net,如果要将客户端的字符串解析为字典,这很方便...
Create a JSON string on the client side either like this: 像这样在客户端创建一个JSON字符串:
var args = "{'A':'1','B':'2','C':'" + varForC + "'}";
or like this: 或像这样:
var args = JSON.stringify(new { 'A':1, 'B':2, 'C':varForC});
or even like this: 甚至像这样:
var obj = {};
obj.A = 1;
obj.B = 2;
obj.C = varForC;
var args = JSON.stringify(obj);
pass it to the server... 传递给服务器...
then parse it on the server side like this: 然后像这样在服务器端解析它:
JavaScriptSerializer jss = new JavaScriptSerializer();
Dictionary<String, String> dict = jss.Deserialize<Dictionary<String, String>>(args);
JavaScriptSerializer requires System.Web.Script.Serialization. JavaScriptSerializer需要System.Web.Script.Serialization。
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