symbols

What is the best way to create a Sympy equation, do something like take the derivative, and then plot the results of that equation? I have my symbolic equation, but can't figure out how to make an array of values for plotting. Here's my code: from sympy import symbols import matplotlib.pyplot as mpl t = symbols('t') x = 0.05*t + 0.2/((t - 5)**2 + 2) nums = [] for i in range(1000): nums.append(t) t += 0.02 plotted = [x for t in nums] mpl.plot(plotted) mpl.ylabel("Speed") mpl.show() In my case I just calculated the derivative of that equation, and now I want to plot the speed x , so this is

I know I can use the Alt Key with the Number Pad to type in symbols, but how do I programmatically insert a Symbol (Pound, Euro, Copyright) into a Textbox? I have a configuration screen so I need to dynamically create the \uXXXX's. In C#, the Unicode character literal \uXXXX where the X 's are hex characters will let you specify Unicode characters. For example: \u00A3 is the Pound sign, £. \u20AC is the Euro sign, €. \u00A9 is the copyright symbol, ©. You can use these Unicode character literals just like any other character in a string. For example, "15 \u00A3 per item" would be the string

Does anyone know why a library initialized within dlopen() would initialize a static variable owned by the main program. Both the main program and shared library have a copy of the static variable, but for some reason the shared library re-initializes the main program's copy of the static variable and destructs it, causing a segfault when the main program attempts to destruct it. Is this a case of bad name mangling in the symbol table? This is a case where the runtime linker only wants a single active copy of a symbol in a process. If both a shared object and the executable have a copy of the

Assume main.c uses symbols from shared libs and local functions declared in main.c . Is there a nice and elegant way to print a list of all the available function names and symbols at run time? It should be possible since the data is loaded to the .code segment. Since I had the same need to retrieve all loaded symbol names at runtime, I did some research based upon R..'s answer. So here is a detailed solution for linux shared libraries in ELF format which works with my gcc 4.3.4, but hopefully also with newer versions. I mostly used the following sources to develop this solution: ELF Manpage

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(/™/gi, '^™'). replace(/©/gi, '^©'). replace(/©/gi, '^©') ); How can I make

Scala has symbols - names that start with a single quote ' and which are a kind of string constants. I know symbols from Ruby (where they start with a colon). In Ruby they are used for some meta-programming tasks, like generating getters and setters for member variables (for example attr_reader :name to generate a getter for name ). I haven't seen a lot of use of symbols in Scala code yet. What are practical uses for symbols in Scala? Do symbols really fit into Scala? In the wonderful land of Lisp, code is represented as nested lists of literal objects that denote themselves (strings, numbers,

What does ::= mean in programming documentation? For example in the Lua documentation : or in Python documentation . It symbolizes 'symbol derivation rule' in Backus–Naur Form Meaning that in: <symbol> ::= __expression__ nonterminal <symbol> consists of (is defined as, is constructed from, derives from) __expression__ It's used to describe language grammars. Notice that both examples are in Extended Backus–Naur Form , but using a traditional BNF symbol-expression separator ( ::= ). martineg This is Backus-Naur Form (BNF) notation describing the language. ::= in this context means is defined as