symbols

问题 I want to create a pairs plot in R that has labels on the diagonal written as greek letters. I've tried creating a custom text.panel function that wraps the labels in an expression() call, but this does not work. Here is a simple test case: pairs.greek <- function(x, ...) { panel.txt <- function(x, y, labels, cex, font, ...) { lab <- labels text(0.5, 0.5, expression(lab), cex=cex, font=font) } pairs(x, text.panel=panel.txt) } dat <- data.frame(alpha=runif(10), beta=runif(10), gamma=runif(10))

问题 I'm trying to debug an android native app from Android Studio's native debugging using lldb. My native app contains one libmain.so that is compiled and run by Android Studio and another external libother.so compiled by me. when debugging, I am able to set breakpoints in libmain.so but not libother.so. Both shared objects are stripped but somehow Android Studio makes lldb know about the unstripped version of libmain.so. I want to do the same for libother.so. What command do I need to give lldb

问题 I'm trying to debug an android native app from Android Studio's native debugging using lldb. My native app contains one libmain.so that is compiled and run by Android Studio and another external libother.so compiled by me. when debugging, I am able to set breakpoints in libmain.so but not libother.so. Both shared objects are stripped but somehow Android Studio makes lldb know about the unstripped version of libmain.so. I want to do the same for libother.so. What command do I need to give lldb

问题 I have such a function lnn1c(ii, j, n, n1) which takes indexes ii and jj as arguments where Kdk1 and Wdg are some arrays, wg(n) is another function kinda alpha*(n-3) and Gdg is a symbolic variable. function lnn1c=lnn1c(ii, j, n, n1) syms k1Vzdg global Gdg Wdg Kdk1 lnn1c=Gdg-i*(-(Wdg(ii)-Wdg(j))+(wg(n)-wg(n1))+... (Kdk1(ii)-Kdk1(j))*k1Vzdg); end I wanna perform in my script summation of expression lnn1c(ii, j, n, n1) over indexes ii and j from 1 up to 4. I tried such code syms ii jj n n1 sum

问题 When I first started reading about and learning ruby, I read something about the power of ruby symbols over strings: symbols are stored in memory only once, while strings are stored in memory once per string, even if they are the same. For instance: Rails' params Hash in the Controller has a bunch of keys as symbols: params[:id] or params[:title]... But other decently sized projects such as Sinatra and Jekyll don't do that: Jekyll: post.data["title"] or post.data["tags"]... Sinatra: params[

问题 I thought ifndef something #define something body #endif solved this error, so I'm not sure why this is happening. //Library.h #ifndef __LIBRARY__ #define __LIBRARY__ #include <iostream> #include <string> #include <cstring> #include <cmath> #include <cstdio> #include <cstdarg> #include <vector> #include <ctime> #include <cmath> #include <cstdlib> //file includes #include "Globals.h" using namespace std; #endif //__LIBRARY__ -- //globals.h //global variables #ifndef __GLOBAL__ #define __GLOBAL

问题 In the about_symbols.rb Ruby Koan (https://github.com/edgecase/ruby_koans), I have the following code: RubyConstant = "What is the sound of one hand clapping?" def test_constants_become_symbols all_symbols = Symbol.all_symbols assert_equal true, all_symbols.include?(:"nonexistent") assert_equal true, all_symbols.include?(:"What is the sound of one hand clapping?") assert_equal true, all_symbols.include?("What is the sound of one hand clapping?".to_sym) end As is, the test passes. Three

问题 Here is the error message I receive when compiling ... Ld /Users/ilia3546/Library/Developer/Xcode/DerivedData/MasterDetail-fhgogwnbpzovbtaskgecptdnvgjs/Build/Products/Debug-iphonesimulator/MasterDetail.app/MasterDetail normal i386 cd /Users/ilia3546/Проекты/iDecide setenv IPHONEOS_DEPLOYMENT_TARGET 5.0 setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"

问题 var sym = Symbol(); is window['sym'] which is already global scope . But MDN says: The above syntax using the Symbol() function will not create a global symbol that is available in your whole codebase. To create symbols available across files and in a global scope-like environment , use the methods Symbol.for() and Symbol.keyFor() to set and retrieve symbols from the global symbol registry. sym is already in global scope in a browser, with above declaration syntax. What is global symbol

问题 I am trying to add  tags around every ™, ®, © in my page. I found this question: CSS superscript registration trademark which helped get me started. The script works in the sense that the tags are being placed in the proper locations, but it is adding two  tags around each instead of just one. Here is my JS adding the tags: jQuery("body").html( jQuery("body").html().replace(/®/gi, '^®').replace(/®/gi, '^®'). replace(/™/gi, '^™'). replace(/™