eval

问题 A few questions have come up recently involving the Application.Evaluate method callable from Excel VBA. The old XLM macro language also exposes an EVALUATE() function. Both can be quite useful. Does anyone know why the evaluator that is exposed can handle general expressions, though? My own hunch is that Excel needed to give people a way to get ranges from string addresses, and to get the value of named formulas, and just opening a portal to the expression evaluator was the easiest way. (The

问题 <asp:Label ID="lblLeaveStatus" runat="server" Font-Bold="true" Text='<%# Eval("Leave_Status").ToString() == 'A' ? 'Approved' : 'Applied' %>'></asp:Label> Condition to display a particular word in the GridView on some condition Could some thing like this work on Gridview I get an error Server Tag not well formed 回答1: Try this <asp:Label ID="lblLeaveStatus" runat="server" Font-Bold="true" Text='<%# Eval("Leave_Status").ToString() .Equals ( "A") ? "Approved" : "Applied" %>'></asp:Label> 回答2: Use

问题 Hi I am new to this system, please be gentle with me. The problem I am now having is the inability to call the class file from ASPX through Eval. The class file is located in "~/classes" folder. Please provide me with methods and ways to evade this error or even solve it thank you!! ^^ Programming language : C# Problem found in : .ASPX gridView Problem also found in : EstateDBManager class file Error Message : DataBinding: 'DWAD_Project.classes.Volunteer' does not contain a property with the

问题 In strict mode, indirect calls to eval should have this bound to the global object in eval code. 10.4.2: In Edition 5, indirect calls to the eval function use the global environment as both the variable environment and lexical environment for the eval code. In Edition 3, the variable and lexical environments of the caller of an indirect eval was used as the environments for the eval code. However, in Opera, this expression results in undefined : (function(){'use strict'; return (0 || eval)(

问题 I am using python 3.X. I am trying to use the eval()dataframe method including custom functions like this import pandas as pd import numpy as np df = pd.DataFrame({ 'T': [0, 10, 0, 10, 10, 30], 'P': [0, 0, 1000, 1000, 0, 0], 'S': [25, 25, 25, 25, 40, 40] }) def custom(A, B, C): # some operations aux = pd.DataFrame({ 'A': [0, 10, 0, 10, 10, 30], }) return aux.A # here is where I want to return the numpy array or list, or dataframe column eq = 'RES = T + @custom(S, T, P) + 2' df.eval(eq, engine

问题 I do a lot of regex on file A . Based on my parsing, I create many subroutines and store them in a hash , $code --in subroutine f . sub f { #REGEX on file A $code = { "a0" => "sub { my $x = shift; .... return 0*x;}", "a1" => "sub { my $x = shift; .... return 1*x;}", .... "a9" => "sub { my $x = shift; .... return 9*x;}", } } The hash values of code are the generated subroutines and the keys are some other strings. Then, using subroutine g , I do lots of regex on file B and get some keys and

问题 I'm facing very strange issue, I'm getting JSON object from django powered site and excuting it using eval(). It works on all the other browsers except all versions of IE. in IE, I am getting "variable_name" is null or not an object. I've tried everything I could but so far no luck. here is my json object var results = {"result":[ { "artist":"somevalue", "song":"someothervalue", "file":"filepathvalue", "views":"0", "songid":"1007", "artistimage":"default.jpg" }, { "artist":"artistname", "song

问题 I have 30 txt files with data And I want to create on the fly vectors from that files with the name of "file name" pathforindependents = 'C:\MatLab\independent\' independents = dir(fullfile(pathforindependents,'ind*.txt')) for i = 1:length(independents) filename = independents(i).name; r=regexp(filename,'\.','split'); qnumber = r(2) qtitle=r(3) qpath = strcat(pathforindependents,filename) qdata = load(qpath) mtrxPrefix = 'mtrx_'; v = strcat(mtrxPrefix,qtitle); eval(???????????????????????)

问题 I'm attempting to pass arguments to a VBA function via a string (user input from form) The following code is throwing Runtime Error 2517 (Access cannot find the procedure '.') after it finishes running function a Public Function a(Optional al As Boolean, Optional bl As Boolean) Debug.Print al End Function Public Sub b() Application.Run a, "bl:=false, al:=false" End Sub The correct syntax for the function would be Application.Run "a", "false", "false" but this approach cannot handle named

问题 I'm making a calculator for android using kivy and it's almost done (cannot use java becasue python is the only language I know). The way it works is, the user inputs an expression and eval is used to evaluate that expressions. At the moment, in my app, the eval expression can contain numbers, mathematical operators (+, -, /, *) and most of the operators from math module (In short, it's a scientific calculator) and it works as intended. In future I'm planning on integrating matplotlib to add