perl substr to get a substring - 


  #! / Usr / bin / perl मेरी $ str = "abc def yyyhi"; प्रिंट उपस्ट्रेट ($ str, 0, इंडेक्स ($ str, ''));

मैं substr को प्रिंट करना चाहता हूँ 

  प्रिंट substr ($ str, index ($ str, ''), rindex ($ str, '' ) काम नहीं कर रहा है?

कोई भी विचार?

आपने किया 'तर्क के रूप में आप जितना चाहते हैं उतना स्पष्ट नहीं है, लेकिन सबसे अच्छा अनुमान है कि आप पहली और आखिरी जगहों के बीच वर्णों को मुद्रित करना चाहते हैं।

आपका उदाहरण कोड बहुत सारे अक्षर मुद्रित करेगा क्योंकि इससे पहले # वर्णों का प्रिंट होता है अंतिम स्थान (आपके उदाहरण में, 7 की बजाय 10)। ठीक करने के लिए, आपको पहले स्थान के पहले # वर्णों को घटाकर # मुद्रित वर्णों को समायोजित करने की आवश्यकता है।

इसके अलावा, आपको एक पहला स्थान छपाई करने से बचने के लिए अपने "अनुक्रमणिका" मान के दायीं ओर वर्ण - 

  $ cat d: \ scripts \ test1 नीचे दिए गए उदाहरण में "+1" और "-1" मेरी $ str = "abc def yyy ghi" मेरी $ first_space_index = इंडेक्स ($ str, ''); मेरा $ substring = substr ($ str, $ first_space_index + 1, rindex ($ str, '') - $ first_space_index - 1); प्रिंट "| $ substring | \ n"; Test1.pl | def yyy | |

-

Comments

Post a Comment

Popular posts from this blog

google indexing -

I have a question, how can I get results of similar Google results like Wikipedia, MySpace ... When you search Wikipedia on Google, you have the result of an input search for Wikipedia, which is user-friendly. When you search MySpace on Google, you have Google results below, some links: login, register, sign up, search ... I actually do this on Google for my website Want a kind result? Thank you. itemprop = "text"> create a sitemap: Custom Search Engine Create: Thanks Google!
Read more

wpf controls - Trigger on Image inside a Button WPF -

I want to control the visibility of the image in a button through a trigger: & lt; Button x: name = "notespanel" command = "{binding adddocument}" & gt; & Lt; Image x: name = "notes image" source = "notes" "height =" 32 "& gt; & gt; & gt; & gt; button & gt; 1 / What trigger will appear in the button or in the container that faces the button? 2 / How to set the visibility of the image? Thanks Zone Since you are updating the image, it should lie with the image (style of image as part) such as if the image is by default Is hidden, so I try the following Using R can choose to make it visible with toggleproperty1. DataTrigger binding = "{binding toggleproperty}" value = "1" & gt; & lt ; Setter Property = "Visibility" value = "View" />
Read more

wpf - Converter stops filter working -

I'm trying to display the file name in a listbox, taken from a special directory. They are stored in an ObservableCollection of FileInfo Object: Public supervision & lt; FileInfo & gt; Project Files {Get (empty (selected folder == empty); DirectoryInfo D = New Directory Info (SelectedFolder); if (! D.Extists) returns empty; New Observe Collection & lt; FileInfo & gt; (d.EnumerateFiles ( Return "* .xsi")}}} When a text is entered or a text box has changed in "FilesFilterBy" I applied a filter on the listbox, called Is: Private Zero FilterFiles_TextChanged (Object Sender, TextChangedEventArgs e) {ICollectionView View = Archive Source.GetDefaultView (ProjectFiles); see.filters = new new & amp; object> (IsTextInFilename);} public bool isTextInFilename (object item) {string file name = path.GetFileNameWithoutExtension (as fileInfo) .Name item Returns (filename. ToLower (). Includes (File Byte Text. Taylor ());} At the same time,...
Read more