在Ruby中,可以使用gsub方法在String(字符串)中进行条件替换。 gsub方法是Ruby中String类的一个方法,用于全局替换字符串中的匹配项。它接受两个参数:第一个参数是要替换的模式(可以是字符串或正则表达式),第二个参数是替换后的内容。 使用gsub方法进行条件替换的基本语法如下: 代码语言:ruby 复制 string.
# get the start index of a substring p "in love?".index("love") # 3 p "in love?".index("456") # nil (not found) 还可以分割字符串: p "lavenliu is handsome".split(" ") # ["lavenliu", "is", "handsome"] 数字与字符串转换 通过对象的相应方法转换即可: # string to int p "...
irb>> str[" Ferrari"]=" horse" # A substring can be specified to be replaced by a new # string. Ruby strings are intelligent enough to adjust the # size of the string to make up for the replacement string. irb>> s The world for a horse irb>> s.split # Split, splits the stri...
The next method is where all the action is and it's a doozy, so we will take it in pieces. The first chunk builds and sorts the suffix tree:ruby # ... def longest_repeated_substring(string) size = string.length suffixes = Array.new(size) size.times do |i| suffixes[i] = string...
string[0,3]# "abc"string[3,3]# "123"string[0..-2]# "abc12"#remove or replace the substringstring[0..2] = ""puts string# "123" 子字符串是字符串的一小部分,如果你只想要那个特定的部分,它会很有用,比如开头、中间或结尾 将字符串转换为小写或大写 1234 "HELLO World".downcase # "...
myString[0..6] => "Welcome" The location of a matching substring can be obtained using the index method: myString.index("Ruby") => 11 Comparing Ruby Strings It is not uncommon to need to compare two strings, either to assess equality or to find out if one string is higher or ...
stringTable.Clear();Introduced in version 9.5.0.62Removes all the strings from the table. top FindSubstring # startIndex is an integer # substr is a string # caseSensitive is a boolean retInt = stringTable.FindSubstring(startIndex, substr, caseSensitive);Introduced in version 9.5.0.77Return...
string = "abc123" string[0,3] # "abc" string[3,3] # "123" string[0..-2] # "abc12" #remove or replace the substring string[0..2] = "" puts string # "123" 子字符串是字符串的一小部分,如果你只想要那个特定的部分,它会很有用,比如开头、中间或结尾 将字符串转换为小写或大写 "...
for Linux tryhttp://www.rpmfind.net. Our first program(从此开始) Enter the following into the file, "test.rb". 1 puts"Howdy!" At the C: prompt enter, 1 C:>ruby test.rb This produces: 1 Howdy! OK, daylight's burning, let's move on. ...
if they are not in your main app. Each item can be a string (match substring), a regex, or an array where the first item is a path to match, and the second item is a line number, a Range of line numbers, or a (bare) method name, to exclude only particular lines in a file....