Reflection in Rebol: Is it possible to know the script/object/function that is executing? -

-

यदि आर 3 में यह संभव नहीं है?

हाँ और नहीं।

तकनीकी तौर पर, नहीं ..... फ़ंक्शंस के नाम नहीं हैं, वे अनाम हैं एक ही समारोह एक से अधिक शब्द को सौंपा जा सकता है, इसलिए वास्तविक नाम समस्याग्रस्त है। 

  do func [] [प्रिंट "हे विश्व"] ;; इस फ़ंक्शन का स्पष्ट रूप से सभी नामों पर कोई नाम नहीं है: फ़्ंटक [] [प्रिंट "यो विश्व"] ;; यहां तीन नामों के साथ एक समारोह है f2:: f1 f3:: f2

कुछ मामलों में अभ्यास में, हां .... आप वर्तमान नाम (यदि कोई है) को पकड़ कर सकते हैं एक चाल: एक त्रुटि को कैप्चर करें, और त्रुटि ऑब्जेक्ट में स्टैक पर नाम होता है: 

  f3: func [/ स्थानीय ईओ] [ईओ: निहृ € ा प्रयास करें [0/0] प्रिंट ["नाम है "ईओ / कहां]] एफ 4:: एफ 3   <पी> इसे आज़माएं:  
  & gt; & gt; एफ 3 नाम एफ 3 है & gt; & gt; एफ 4 नाम एफ 4 है  
 
 यहां एक व्यापक चर्चा है:

Comments

Post a Comment

Popular posts from this blog

ios - Form Sheet content disappearing -

-
Image
I am trying to apply a form sheet. Looks like this on the storyboard: App background only when I run Appears and everything else is hidden. I am presenting a form sheet using model sheets - I am working with the form sheet and I (WREGLR Regular) size. Why is this happening?
Read more

Lists in scheme -

-
I am trying to write a function in the plan that takes every item list and class in the list, then returns the list As is (list xyz) . However, I'm not sure how to write a code that would do this. So far, I have (defined (category = list list) (cond [(empty? List) false) [and (list (SQL) (first A-list)) (Square-list) (The rest is a list)))]) but it returns to the list (cons y (cons z empty)) What can I do to return it to the list only in (list xyz) ? Thanks! You're almost there - make sure you type cons and List (The text book explains this section 13. You can find copies online). Conflict The first element for the 'rest' part and (usually) one (potentially empty) list as an example, (Opposition 1 blank) Number 1 as its first element and the empty list is in the form of 'rest' (Opposition 1 (Opposition 2 Empty)) No. 1 before Element, and (Opposition 2 empty) is in the form of 'rest'. List is just a simple shorth...
Read more

List View in C# -

-
I have a ListView in my C # and I want to select an item based on the number I give . Is it possible? Example: If my list adds, multiplied and divides as elements in the list, so if I give 2, then it has to be multiplied. All this should be programmatically If this is ListItem value 2 - I just had to go with it: _listView.SelectedValue = "2"; Or maybe more correct: _listView.SelectedValue = _input.ToString ();
Read more