# What is the uses of inject() **URL:** \ **Category:** ruby-talk\ **Created:** [19 September 2007 10:06 UTC](https://rubytalk.org/t/what-is-the-uses-of-inject/40740 "2007-09-19T10:06:45Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Arul\_hari](https://avatars.discourse-cdn.com/v4/letter/a/db5fbb/32.png) [@Arul\_hari](https://rubytalk.org/u/Arul_hari)\ **Post date:** [19 September 2007 10:06 UTC](https://rubytalk.org/t/what-is-the-uses-of-inject/40740/1 "2007-09-19T10:06:45Z")
Hello friends, Can anybody tell me the answer.              what is the uses of inject(). Give some example. by Vellingiri. > **···** > > -- > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). ---
**Author:** ![Sebastian\_Hungereck1](https://avatars.discourse-cdn.com/v4/letter/s/3ab097/32.png) [@Sebastian\_Hungereck1](https://rubytalk.org/u/Sebastian_Hungereck1)\ **Post date:** [19 September 2007 10:53 UTC](https://rubytalk.org/t/what-is-the-uses-of-inject/40740/2 "2007-09-19T10:53:35Z")
Vellingiri Arul wrote: > Hello friends, > Can anybody tell me the answer. >              what is the uses of inject(). ri Enumerable#inject can give you a more elaborate answer, but here's mine: It allows you to combine the elements of an array using a block (passing the initial value or the result of the last iteration as well as the current item to the block each iteration). > Give some example. [1,2,3,4].inject {|s,i| s+i} #=\> 10 (1+2+3+4) some\_string="haolaolai foo tadam tadum bar HuHu chunky lamb bacon" regexen=[/la./,/foo.\*bar/,/huhu/i] regexen.inject(some\_string) {|str,re| str.gsub(re,"")} #=\> "hao chunky b bacon" #(same as some\_string.gsub(/la./,"").gsub(/foo.\*bar/,"").gsub(/huhu/i,"") ) HTH, Sebastian > **···** > > -- > NP: Porcupine Tree - Deadwing > Jabber: sepp2k@jabber.org > ICQ: 205544826 ---
**Author:** ![anders1](https://avatars.discourse-cdn.com/v4/letter/a/5f8ce5/32.png) [@anders1](https://rubytalk.org/u/anders1)\ **Post date:** [19 September 2007 10:55 UTC](https://rubytalk.org/t/what-is-the-uses-of-inject/40740/3 "2007-09-19T10:55:11Z")
You have a lot of Q and what examples have a look in [http://www.ruby-doc.org/docs/UsersGuide/rg/](http://www.ruby-doc.org/docs/UsersGuide/rg/) //AP > **···** > > On 19 Sep, 12:06, Vellingiri Arul \ wrote: > > > Hello friends, > > Can anybody tell me the answer. > > > >              what is the uses of inject(). > > Give some example. > > > > by > > Vellingiri. > > -- > > Posted viahttp://www.ruby-forum.com/. ---
**Author:** ![Robert\_K1](https://yyz1.discourse-cdn.com/flex029/user_avatar/rubytalk.org/robert_k1/32/1830_2.png) [@Robert\_K1](https://rubytalk.org/u/Robert_K1)\ **Post date:** [19 September 2007 10:59 UTC](https://rubytalk.org/t/what-is-the-uses-of-inject/40740/4 "2007-09-19T10:59:48Z")
> Hello friends, > Can anybody tell me the answer. > >              what is the uses of inject(). [http://errtheblog.com/post/633](http://errtheblog.com/post/633) > Give some example. [http://www.dtcc.edu/cs/rfc1855.html#3](http://www.dtcc.edu/cs/rfc1855.html#3) A general hint: search engines can go a long way in helping answering questions. Regards robert > **···** > > 2007/9/19, Vellingiri Arul \: ---
**Author:** ![Arul\_hari](https://avatars.discourse-cdn.com/v4/letter/a/db5fbb/32.png) [@Arul\_hari](https://rubytalk.org/u/Arul_hari)\ **Post date:** [19 September 2007 11:03 UTC](https://rubytalk.org/t/what-is-the-uses-of-inject/40740/5 "2007-09-19T11:03:04Z")
anders wrote: > > Hello friends, > > Can anybody tell me the answer. > > > >              what is the uses of inject(). > > Give some example. > > > > by > > Vellingiri. > > -- > > Posted viahttp://www.ruby-forum.com/. > > You have a lot of Q and what examples have a look in > [http://www.ruby-doc.org/docs/UsersGuide/rg/](http://www.ruby-doc.org/docs/UsersGuide/rg/) > //AP very very thank you friends. You have asked one question know,that is not a example program question. I am also working one software company,I have faced lot of doubts in my ruby program. Some thing general what we were discussed the questions. Ok. by vellingiri. > **···** > > > On 19 Sep, 12:06, Vellingiri Arul \ \> wrote: > > -- > Posted via [http://www.ruby-forum.com/\](http://www.ruby-forum.com/%5C).