comments

问题 How does the Android compiler work? Does it remove the comments in Java code and Android XML files on compilation? 回答1: Comments in Java files are removed, or ignored, when they are compiled into class files. Class files are not for human-reading - they are optimized to run efficiently on a virtual machine. If the comments were to remain, they would just cause the class files to be larger than required, and for no additional benefit (ie, the compiler and virtual machines don't understand

问题 As we use # for inserting comments in Python, then how does Python takes: # -*- coding: utf-8 -*- differently? 回答1: Yes, it is also a comment. And the contents of that comment carry special meaning if located at the top of the file, in the first two lines. From the Encoding declarations documentation: If a comment in the first or second line of the Python script matches the regular expression coding[=:]\s*([-\w.]+) , this comment is processed as an encoding declaration; the first group of

问题 As we use # for inserting comments in Python, then how does Python takes: # -*- coding: utf-8 -*- differently? 回答1: Yes, it is also a comment. And the contents of that comment carry special meaning if located at the top of the file, in the first two lines. From the Encoding declarations documentation: If a comment in the first or second line of the Python script matches the regular expression coding[=:]\s*([-\w.]+) , this comment is processed as an encoding declaration; the first group of

问题 I have a Ruby code file open in vi, there are lines commented out with # : class Search < ActiveRecord::Migration def self.up # create_table :searches do |t| # t.integer :user_id # t.string :name # t.string :all_of # t.string :any_of # t.string :none_of # t.string :exact_phrase # # t.timestamps # end end def self.down # drop_table :searches end end Say I want to uncomment all the lines in the first def ... end section. What's an efficient way to do that in Vim? In general, I'm looking for an

问题 I wanted to turn on and turn off crone job from os.system command written in python. Basically, using sed command to comment/uncomment the crontab line to control the job schedule. But when I put this command as shown below, python interpret as text after # as comment. import os os.system("crontab -l | sed '/^\*.*heightSQL.py/s/^/#/' | crontab -") Is there any way to tell python not to interpret # as comment symbol? 回答1: You have no issue with the hash symbol but your quoting is not proper.

问题 I am trying to comment the following html so that it shouldn't go to hyperlink. <a href="<!--http://www.google.com=-->" target="_blank" onclick="javascript:alert('Navigation Prevented')">CLICK HERE FOR GOOGLE</a> I am unable to comment target="_blank". if I do so it doesn't work and it displays javascript on page as well. How do I have the page display alert as well as stop opening the page in new tab. I want the effect of target="_blank" to be cancelled. Can't we have multiple comments

问题 I want to display the posted comment once the user comments. Just to add it under all of them as facebook does. I have this: // Interceptamos el evento submit $('#CommentAddForm').submit(function() { alert("entro"); alert($(this).attr('action')); // Enviamos el formulario usando AJAX $.ajax({ type: 'POST', url: $(this).attr('action'), data: $(this).serialize(), // Mostramos un mensaje con la respuesta de PHP success: function(data) { $('#result').html(//????????????); } }); return false; });

问题 I'm using the latest Sass with Compass addon. I want my production code to include my "hard" comments, but after that I would like to have a line break. /*! Generic elements and layout */ /* *********************************************** */ html box-sizing: border-box ... Should be outputted like this: /* Generic elements and layout */ html{box-sizing: border-box}... Is this a possibility? I would like to include licences from 3rd party things (flexbox etc.) like this in my code. 回答1: No.

问题 I'm using the latest Sass with Compass addon. I want my production code to include my "hard" comments, but after that I would like to have a line break. /*! Generic elements and layout */ /* *********************************************** */ html box-sizing: border-box ... Should be outputted like this: /* Generic elements and layout */ html{box-sizing: border-box}... Is this a possibility? I would like to include licences from 3rd party things (flexbox etc.) like this in my code. 回答1: No.

问题 I would like to make a popup box like facebook android app which opens up on pressing the comments button. i want to design the same kind of pop-up for my application . Can anyone let me know how it can be build or just guide me what is the requirement to design that kind of thing. Thanks. 回答1: you can achieve it through PopupWindow Here is the procedure of calling popup window over activity or fragment. Facebook using Rebound Library for awesome swing animations. But i used normal xml