正则表达式(regular expression)描述了一种字符串匹配的模式(pattern),可以用来检查一个串是否含有某种子串、将匹配的子串替换或者从某个串中取出符合某个条件的子串等。 正则表达式的组件可以是单个的字符、字符集合、字符范围、字符间的选择或者所有这些组件的任意组合。 正则表达式是由普通字符(例如字符 a 到 z)以及...
It is known that Regexp matching may take unexpectedly long. If your code attempts to match a possibly inefficient Regexp against an untrusted input, an attacker may exploit it for efficient Denial of Service (so-called Regular expression DoS, or ReDoS). We have introduced two improvements that...
There are multiple ways to build sorbet. This one is the most common:./bazel build //main:sorbet --config=dbg This will build an executable in bazel-bin/main/sorbet (see "Running Sorbet" below). There are many options you can pass when building sorbet:...
This is the first way of creating her document ie. multiple line string. EOF print <<"EOF"; # same as above by www.yiibai.com This is the second way of creating her document ie. multiple line string. EOF print <<`EOC` # execute commands echo hi there echo lo there EOC print <<"...
her document ie. multiple line string. EOF print <<`EOC` # execute commands echo hi there echo lo there EOC print <<"foo", <<"bar" # you can stack them I said foo. foo I said bar. bar 1. 2. 3. 4. 5. 6. 7. 8.
In the first example, we use the match method to apply regular expression on strings. The match method returns the matched data on success or nil otherwise. p "Seven".match /.even/ The "Seven" is the string on which we call the match method. The parameter of the method is the ...
1 C:>ruby test.rb This produces: 1 Howdy! OK, daylight's burning, let's move on. Output in Ruby "puts" 写到屏幕上,并带有个换行,writes to the screen with a carriage return at the end. "print" 写到屏幕,但没有换行,does the same thing without the carriage return. ...
It is known that Regexp matching may take unexpectedly long. If your code attempts to match a possibly inefficient Regexp against an untrusted input, an attacker may exploit it for efficient Denial of Service (so-called Regular expression DoS, or ReDoS). ...
Simple Navigation- A ruby gem for creating navigation (html list, link list or breadcrumbs with multiple levels) for your Rails 2, 3 & 4, Sinatra or Padrino. Light Service- Series of Actions with an emphasis on simplicity. Mutations
match?(/something/) Note With direct subclasses of BasicObject, using is_a? is not an option since BasicObject doesn’t provide that method (it’s defined in Object). In those rare cases it’s OK to use ===. is_a? vs kind_of? Prefer is_a? over kind_of?. The two methods ...