expression Questions

2

Please explain to me how a lambda expression can use and modify instance variables of its enclosing class, but can only use local variables of its enclosing scope. (Unless it is final or effective ...
Cattier asked 28/8, 2015 at 13:53

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I study C language from "C Primer Plus" book by Stephen Prata and it came to the point : "A full expression is one that’s not a subexpression of a larger expression.Examples of full expression...
Beauteous asked 20/2, 2018 at 7:39

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How can I combine text and math expressions in a plot's title. If I use paste the expression is converted to character. For example I want something like this as a title $ARL_1$ curve for $S^2$ ...
Faulk asked 29/11, 2010 at 9:27

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Using Entity Framework (LINQ to Entities) The following is working just fine. The expressions got translated to SQL var foos = ctx.Foos.Select(f => new { P1 = ctx.Bars.FirstOrDefault(b =>...
Indene asked 29/1, 2018 at 8:55

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I've been able to modify IQueryable expressions using an ExpressionVisitor and other custom Expressions. My problem is with third party frameworks that use Entity Framework (e.g. OData), that modi...
Suspicious asked 22/1, 2018 at 9:36

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After reading this answer on a CSS question, I wonder: In Computer Science, is a single, constant value considered an expression? In other words, is 7px an expression? What about just 7? Quoting...
Pifer asked 19/12, 2017 at 14:12

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I have the following two columns: StartDate = 2017-01-01 00:00:00.000 EndDate = 2017-01-01 05:45:00.000 I need to write an SSIS expression for my derived column that will calculate the time betw...
Jarvisjary asked 14/12, 2017 at 15:38

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I came across an interesting expression in Ruby: a ||= "new" It means that if a is not defined, the "new" value will be assigned to a; otherwise, a will be the same as it is. It is useful when d...
Transvestite asked 20/7, 2012 at 7:9

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So Expression.Compile does the following Compiles the lambda expression described by the expression tree into executable code and produces a delegate that represents the lambda expression. An...
Phylloxera asked 27/7, 2014 at 4:35

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I know that this might be a duplicate, but I have not found sufficient answers to my examples. In general, what is the difference between statements and expressions? This is a distinction which I h...
Bitartrate asked 2/9, 2015 at 2:18

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I want to do so: ng-hide="!globals.isAdmin && mapping.is_default" but the expression evaluates always to false. I do not want to define special function on $scope.
Codd asked 1/3, 2013 at 20:19

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void f(int x) { int (x), 1; } Clang compiles it, GCC doesn't. Which compiler is correct?
Nonbelligerent asked 8/11, 2017 at 22:10

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I just stomped at a begin...end in Erlang's documentation (here), but it doesn't give some examples of how it is useful. Looking here in StackOverflow I found two cases where people would be using...
Inextricable asked 21/11, 2013 at 15:39

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DateTime tempDate = calculatesomedatetime(); someDateTimeControl.Value = null; //no issue someDateTimeControl.Value = (tempDate > DateTime.MinValue)? tempDate : null; Type of conditional exp...
Putrescent asked 3/10, 2017 at 4:13

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Consider the following. (which works, but I need Accounts to be passed in as a string. Accounts is list of Account) repo = repo.Where(x => x.Accounts.Any(p => p.Id == 1)); Here is what I h...
Staton asked 24/9, 2017 at 17:8

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I am familiar that statements do something and that expressions are a "collection of symbols that make up a quantity" (What is the difference between an expression and a statement in Python?). My q...
Jessabell asked 23/9, 2017 at 1:25

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For the past few hours I have been trying to find the difference between the 3, not just the difference, I also have been trying to find out which are sort of synonymous, MDN calls all declarations...
Wenz asked 21/9, 2017 at 19:35

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I'm trying to figure out a way to structure my data so that it is model bindable. My Issue is that I have to create a query filter which can represent multiple expressions in data. For example: x ...
Pharmaceutics asked 5/9, 2017 at 14:7

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I am currently writing a small package that is supposed to fit multinomial processing tree models (for not needed background info a web page and a pdf). What it does is the following: It reads a m...
Boche asked 3/3, 2011 at 12:15

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I am using the following expression to work out a percentage: =Fields!Days.Value/Sum(Fields!Days.Value, "Date_month_name") Days.Value is showing as 0 however in a few of my results instead of re...
Bradytelic asked 12/1, 2012 at 14:12

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I was reading this question: Undefined behavior and sequence points and, specifically, the C++11 answer, and I understand the idea of "sequencing" of evaluations. But - is there sufficient sequen...
Iata asked 22/8, 2017 at 10:34

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is it possible to dynamically generate such a predicate using LambdaExpressions? Expression<Func<Test, bool>> predicate = t => t.Levels.Any(l => l.LevelDetails.Any( ld => ...
Dextran asked 18/8, 2017 at 21:37

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The detail row in my table contains a column with an expression: =sum(Fields!one.Value) / sum(Fields!two.Value) I want to sum that column, but the results I get are not the sum of the ratios, but ...
Brokerage asked 20/4, 2011 at 13:14

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This paragraph from the C++ 17 standard draft states, among others, that: A full-expression is: -an unevaluated operand, -a constant-expression ([expr.const]), -an init-declarator ([dcl...
Exposition asked 8/8, 2017 at 19:10

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So I have an error in my code that's saying Invalid regular expression flags. The line at fault is this one: ctx.drawImage(/Users/aUser/Desktop/NightSquare.png, 200, 200);, but aUser is replaced wi...
Christology asked 5/8, 2017 at 2:55

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