[iOS]拾遗补阙

一、afnetworking post字符串

修改位置afurlrequestserialization

修改前

nsstring * afquerystringfromparameters(nsdictionary *parameters) {
    nsmutablearray *mutablepairs = [nsmutablearray array];
    for (afquerystringpair *pair in afquerystringpairsfromdictionary(parameters)) {
        [mutablepairs addobject:[pair urlencodedstringvalue]];
    }

    return [mutablepairs componentsjoinedbystring:@"&"];
}

修改后

nsstring * afquerystringfromparameters(nsdictionary *parameters) {
    if ([parameters iskindofclass:[nsstring class]])
        return (nsstring *)parameters;
    
    nsmutablearray *mutablepairs = [nsmutablearray array];
    for (afquerystringpair *pair in afquerystringpairsfromdictionary(parameters)) {
        [mutablepairs addobject:[pair urlencodedstringvalue]];
    }

    return [mutablepairs componentsjoinedbystring:@"&"];
}

二、查找一个字符串中的多个相同子字符串

nsstring *str = @"14 28 62 24 3 46 99 73 10 51 0 95 34 58 50 33 56 23 97 82 83 8 94 1 17 7 19 96 9 54";
nsstring *searchstring = @"1";

nsrange searchrange = nsmakerange(0, [str length]);
nsrange range;

while ((range = [str rangeofstring:searchstring options:0 range:searchrange]).location != nsnotfound)
{
    nslog(@"%@",nsstringfromrange(range));
    
    searchrange = nsmakerange(nsmaxrange(range), [str length] - nsmaxrange(range));
}