alias

I would like to "rename" some members of my class ofVec4f . I know it's impossible in strict C++ but could I create a new class that inherits from my class and declare new members which are aliases or pointers to the original members? I tried the following: class ofVec4fGraph : public ofVec4f { public : float& minX; float& maxX; float& minY; float& maxY; ofVec4fGraph(float _minX,float _maxX, float _minY, float _maxY ) : minX(_minX), maxX(_maxX), minY(_minY), maxY(_maxY) { ofVec4f(_minX, _maxX, _minY, _maxY); }; }; Mohit Jain Your class should be: class ofVec4fGraph : public ofVec4f { public :

Hi im trying to define an alias called USHORT. // ***************** // Demonstrates typedef keyword #include <iostream> typedef unsigned short int USHORT; // typedef defined main() { USHORT Width = 5; USHORT Length; Length = 10; USHORT Area = Width * Length; std::cout << "Width:" << Width << "\n"; std::cout << "Length: " << Length << std::endl; std::cout << "Area: " << Area; } I keep getting a compiler error saying: Error 1 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int c:\users\naqvi-home\documents\justit\c++\w1\cp1\list0304.cpp 8 1

I noticed when doing a query with multiple JOINs that my query didn't work unless I gave one of the table names an alias. Here's a simple example to explain the point: This doesn't work: SELECT subject from items join purchases on items.folder_id=purchases.item_id join purchases on items.date=purchases.purchase_date group by folder_id This does : SELECT subject from items join purchases on items.folder_id=purchases.item_id join purchases as p on items.date=p.purchase_date group by folder_id Can someone explain this? You are using the same table Purchases twice in the query. You need to

Most SQL experts would say one can't re-use an alias in a select at the same level; often to work around this a CTE is used; or one wraps the query as a subquery so the alias can be referenced. However, mySQL seems to allow such a situation provided the alias is referenced in a subquery within the select itself; so it's not technically at the same level. DEMO: SELECT CONCAT(a, b) AS c1, CONCAT((SELECT c1), 2) FROM (SELECT 'a' a, 'b' b, 'c' c UNION ALL SELECT '1', '2', '3') t1; SELECT 1 a, 2 b, (SELECT A+B) c , concat((SELECT a),(SELECT b)) d , greatest((SELECT a),(SELECT b), (SELECT c)) Both

Is there way to set up an alias in such a way so that I could enter the command, followed by the argument in a single line? For example, instead of javac Program.java && java Program I would be able to go newcommand Program.java //or "newcommand Program", whichever is easier which would do the same commands as the line above. An alias is not made to accept parameters, define a function like this: jcar() { javac $1.java && java $1 ; } Then use it: jcar Program ( jcar was intended as an acronym for java-compile-and-run) Adding on to enrico.bacis' answer, i personally don't like to have Program

I found some code from the msdn site (Code included below), which looks like it will return all dns aliases for a given server. I've implemented the code in a cosole app, which should allow me to enter the host name of a server and it should return all dns alias names. I enter the host name of a server in our domain known to have aliases (I can ping the host and the aliases and they all resolve to the same IP), but this code does not find the alias names. Obvously my understanding of dns aliases and/or the code is lacking... please educate me... static void Main(string[] args) { Console.Write(

SELECT CASE WHEN SUM(X.Count)*3600 is null THEN '0' ELSE SUM(X.Count)*3600 END AS PJZ, X.Mass FROM X WHERE X.Mass > 2000 HAVING ((X.Mass / PJZ * 100) - 100) >= 10; Getting: ERROR: Column »pjz« doesn't exists. How can I do something like this? Wrap it into a derived table: SELECT CASE WHEN PJZ = 0 THEN 100 ELSE PJZ END as PJZ, mass FROM ( SELECT CASE WHEN SUM(X.Count)*3600 is null THEN '0' ELSE SUM(X.Count)*3600 END AS PJZ, X.Mass FROM X WHERE X.Mass > 2000 GROUP BY X.mass ) t WHERE PJZ = 0 OR ((X.Mass / PJZ * 100) - 100) >= 10; (Note that I added the missing group by as otherwise the query

I want to (am trying to) make my code more readable. I have been using the following class aliasing. using Histogram = EmpiricScore<int>; using FeatureHistogram = Dictionary<string, EmpiricScore<int>>; But I think something like (note: I'm attempting to describe FeatureHistogram in terms of Histogram here, rather than EmpiricScore<int>> ): using Histogram = EmpiricScore<int>; using FeatureHistogram = Dictionary<string, Histogram>; Seems more readable (the dependencies can go much deeper, what if I create a Hierarchical feature histogram), and easier to re-factor (if I happen to decide that the

I have aliases in a ~/.bash_aliases file on a remote ubuntu server. The file is loaded in the standard way from a ~/.bashrc file, like so: if [ -f ~/.bash_aliases ]; then . ~/.bash_aliases fi That ~/.bashrc file in turn is loaded (also in a standard way) from a ~/.profile file which looks like this: if [ "$BASH" ]; then if [ -f ~/.bashrc ]; then source ~/.bashrc echo ".profile loaded .bashrc" fi fi mesg n I've found that my aliases were unavailable in my fabric commands, e.g. when I do this in a fabric script: run("aliased_command") I get this output: run: aliased_command out: .profile loaded