symbols

问题 I have been coding a small program for fun, but I have been getting this error: Compilation error time: 0.11 memory: 380672 signal:0Main.java:22: error: cannot find symbol string dtext = "One"; ^ symbol: class string location: class Ideone Main.java:37: error: cannot find symbol System.out.println(dtext); ^ symbol: variable dtext location: class Ideone 2 errors My code: import java.util.*; import java.lang.*; import java.io.*; import static java.lang.System.*; import java.util.Scanner; import

问题 When using the code below int count = 0; while(count != '♂'){ count++; } System.out.print(count); in the interactions pane in dr java, it equals the correct unicode number (9794), but when done in the programming pane , it returns 63, using the exact same code. Why is that ? This is getting complicated, when using this code in the interactions pane import java.util.Scanner; Scanner scan = new Scanner(System.in); int count = 0; String letter = scan.next(); input is ♂ while(count != letter

问题 I have a plot and would like to add some regression statistics (e.g. F, R2, p) in the plot area. I am familiar with text() , but have been unable to find a comprehensive source of information with examples on how to build text strings with mathematical symbols, sub-and superscripts, etc. Any sources with detailed examples greatly appreciated. For example, I have a simple linear regression that I would like to extract the stats from and add them to my plot. For example reg1 <- lm(WW1 ~ PC1,

问题 I am using the roslyn API and ace text editor to create a web IDE. When i hover over data i need it to find the symbol at the given location. This works in some situations by calling the roslyn method: var symbol = SymbolFinder.FindSymbolAtPosition(semanticModel, offset, dotNetCodeManager.Solution.Workspace, cancellationToken); An example of the situations where this works is when i hover my mouse over the word "table" in the below example. var SchemaName = table.Schema.Name; However when i

问题 So I've been attempting to find the solution to this but so far everything I've read online has to do with scope issues and not declaring the variables with the my keyword. However, I can't seem to fix the issues because I've declared everything at the top and, to me at least, it seems I don't have scope issues. My errors for the following code are: Global symbol "$filename" requires explicit package name at read_ids.pl line 6. Global symbol "$filename" requires explicit package name at read

问题 How can I make a hat vector character in XMGRACE? I've been trying all combinations for two hours now. 回答1: To be honest, doing something like that is annoyingly difficult in xmgrace. In this case, the most easy route would be to use a superscript and shift it to the left with the \h command: v\S\h{-0.6}^ which results in something like this: It is not particularly pretty, but it does the job (I guess). The full list of available commands can be found here. 来源： https://stackoverflow.com

问题 I'm reading a Ruby book but it doesn't explain the following: What is this: validates :name, :presence => true I mean I know what it does but what's validates ? Is it a method of the validator class? If so, how come it's called without mentioning the class name first? What's the meaning of : in the previous code and in Rails on general? In the following code: <%= form_for([@post, @post.comments.build]) do |f| %> Is form_for an object or a procedural function? What's the meaning of the |

问题 I added a data cursor in a Matlab figure, and this it the code shown when I clicked "Edit Text Update Function..." function output_txt = myfunction(obj,event_obj) % Display the position of the data cursor % obj Currently not used (empty) % event_obj Handle to event object % output_txt Data cursor text string (string or cell array of strings). pos = get(event_obj,'Position'); output_txt = {['X: ',num2str(pos(1),4)],... ['Y: ',num2str(pos(2),4)]}; % If there is a Z-coordinate in the position,

问题 My scenario is about cross-compiling to a Arduino Due (ARM target), but I guess it's a generic C weak symbol problem. I want to break my firmware into 3 parts: 1. The hardware library (CMSIS, Middleware) -> libHardware.a 2. Realtime OS library -> libOS.a 3. Application code -> Output.elf linked to above. the referenced CMSIS implementation has declared the followings: void SysTick_Handler ( void ) __attribute__ ((weak, alias("Dummy_Handler"))); // ...and a few dozen IRQ handler hook skipped

问题 I want to pass some value through url in wordpress, but I met some trouble that wordpress will exchange & to #038; automatically, how to make a & still as a & ? I noticed in wp-includes/formatting.php , there has many rules to exchange symbols, I tried modify some code, but failed. some link like site.com?this=that&that=this will output to the web browser address like site.com?this=that#038that=this and the page can not get the value in the part that=this how to setting correctly? thanks. 回答1