symbols

问题 I am working on a code challenge using symbols on line 4. What is the code on line 4 doing? Is line 4 not using symbols correctly??? 1 class NameThingy 2 3 def format_name(name) 4 return "#{name[:last]}, #{name[:first]}" 5 end 6 7 def display_name(name) 8 puts format_name(name) 9 end 10 11 end my_name = NameThingy.new#("Jessica Flores") my_name.format_name("Jessica Flores") my_name.display_name("Jessica Flores") When I run this, I get this error message: test.rb:6:in `[]': can't convert

问题 I have a WPF application, running on 64-bit Windows 7, wherein I am using Segoe UI Symbol font. It works perfectly fine on my box, but the font doesn't show up on a similar dev box (64-bit Windows 7). I verified, the problem box has this font installed on it. Could anyone kindly guide me what could be the cause of this behaviour? Thanks, RDV 回答1: Thanks Blam & HighCore for your inputs. I figured out that Windows 7 has Segoe UI Symbol Regular font of version 5.0. WPF applications require min

问题 I have seen the posts on this site about the following error: The breakpoint will not currently be hit. No symbols have been loaded for this document. But, the problem descriptions and solutions haven't addressed the situation I am experiencing so, I hope to get some clarification. I am using Visual Studio 2010, and working on a very large, somewhat old ASP.NET web application that targets .NET v2. The first page of the application is Login.aspx. If I put a break point on the first line of

问题 We are trying to run shark on our iphone application. However, in the analyzed samples it does not list any of our application function. All that is listed are the libraries and when we click on any of those, the assembly code is visible. Most of the sites mention about 'Generate Debug Symbols' option when building the app; I am not able to find this option either. Instead I have enabled the 'Generate Profiling Information' option. Can anyone please help as to how do I see my application

问题 The numThrows Variable is inciting an error of variable not found when used in the main method. even though i declare it in one of the methods. I use the declare the variable in the void prompt method. This program is designed to calculate Pi using random coordinates then uses a formula to estimate pie over a user given amount of tries. import java.util.Random; import java.util.Scanner; import java.io.PrintWriter; import java.io.File; import java.io.IOException; public class Darts public

问题 I have files foo.c bar.c and baz.c, plus wrapper code myfn.c defining a function myfn() that uses code and data from those other files. I would like to create something like an object file or archive, myfn.o or libmyfn.a, so that myfn() can be made available to other projects without also exporting a load of symbols from {foo,bar,baz}.o as well. What's the right way to do that in Linux/gcc? Thanks. Update: I've found one way of doing it. I should've emphasised originally that this was about

问题 I am fetching data from an API to be displayed in my iOS app. Some of this data is a percentage so when it is negative it is displayed as -0.98% for example, no problem, but for clarity I'd like positive variations to be displayed as +0.98 and not simply 0.98. Here is my code when I update the labels: func updateBitcoinUI(with bitcoinInfo: Bitcoin) { DispatchQueue.main.async { self.bitcoinPercentageChangeLabel.text = String(format: "%.2f%%", Double(bitcoinInfo.percentChange24h) ?? 0) } } Is

问题 I load Python dynamically with dlopen and RTLD_LOCAL to avoid collisions with another library which by coincidence contains a few symbols with the same name. Executing my MVCE above on macOS with Xcode fails because it expects _PyBuffer_Type in the global namespace. Traceback (most recent call last): File "...lib/python2.7/ctypes/__init__.py", line 10, in <module> from _ctypes import Union, Structure, Array ImportError: dlopen(...lib/python2.7/lib-dynload/_ctypes.so, 2): Symbol not found:

问题 For my case, if a certain pattern is found as the second field of one line in a file, then I need print the first two fields. And it should be able to handle case with special symbol like backslash. My solution is first using sed to replace \ with \\, then pass the new variable to awk, then awk will parse \\ as \ then match the field 2. escaped_str=$( echo "$pattern" | sed 's/\\/\\\\/g') input | awk -v awk_escaped_str="$escaped_str" '$2==awk_escaped_str { $0=$1 " " $2 " "}; { print } ' While

问题 Z3 2.x had the feature (well, probably rather the bug) that symbol declarations were not popped away, e.g. the following code is accepted by Z3 2.x: (push) (declare-fun x () Int) ; Assumptions made in this scope will be popped correctly (pop) (assert (= x x)) Z3 3.x no longer accepts this code ("unknown constant"). Is there a way to restore the old behaviour? Or another way how one could declare symbols inside scopes such that the declaration (and only the declaration, not the assumptions) is