Search Results

Search found 14605 results on 585 pages for 'variable definition'.

Page 55/585 | < Previous Page | 51 52 53 54 55 56 57 58 59 60 61 62  | Next Page >

  • Why do I have to specify pure virtual functions in the declaration of a derived class in Visual C++?

    - by neuviemeporte
    Given the base class A and the derived class B: class A { public: virtual void f() = 0; }; class B : public A { public: void g(); }; void B::g() { cout << "Yay!"; } void B::f() { cout << "Argh!"; } I get errors saying that f() is not declared in B while trying do define void B::f(). Do I have to declare f() explicitly in B? I think that if the interface changes I shouldn't have to correct the declarations in every single class deriving from it. Is there no way for B to get all the virtual functions' declarations from A automatically? EDIT: I found an article that says the inheritance of pure virtual functions is dependent on the compiler: http://www.objectmentor.com/resources/articles/abcpvf.pdf I'm using VC++2008, wonder if there's an option for this.

    Read the article

  • Hot to remove text from variable? (php)

    - by Glister
    I have a variable $link_item, it's used with echo and gives the strings like <span class="name">Google</span>http://google.com How to remove "<span class="name">Google</span>" from string? It should give just "http://google.com". Heard it can be done with regex(), please help.

    Read the article

  • VBA Variable from msgbox to report

    - by user1789785
    I have a macro which runs several Sql queries. One of these queries is run based off a date which in input in a msgbox within the macro (only companies after the date entered are generated). Is it possible to put the value entered in the msgbox at the time the macro is run in a table by itself? (my ultimate goal is to put the value on a report to indicate that values displayed are after the following date: variable) Thanks

    Read the article

  • Accessing property of object vs variable in javascript

    - by Samuel
    Why when I try to access a variable that don't exist, javascript throw an exception but when I try to access a property that don't exist in an object, javascript returns an undefined object? For example, this case returns an undefined object: function Foo(){ console.log(this.bar); } Foo(); But, in this other example, javascript throw an exception: function Foo(){ console.log(bar); } Foo(); ReferenceError: bar is not defined

    Read the article

  • Cygwin environment variable case

    - by Michael
    For some reason on one pc, when variable names are going from batch file to Cygwin environment, they are capitalizing. On other the case stay intact. @set aa=bb %BASH% --login -c "set" so the output in one case will show AA=bb in other case aa=bb How to control the case of the exported variables?

    Read the article

  • Set time part of datetime variable to 18:00

    - by maxt3r
    Hi. I need to set datetime variable to two days from now but it's time part must be 18:00. For example if i call getdate() now i'll get 2010-05-17 13:18:07.260. I need to set it to 2010-05-19 18:00:00.000. Does anybody have a good snippet for that or any ideas how to do it right?

    Read the article

  • Pass a variable to new page

    - by Anon
    I am trying to pass a variable from one page, load another and enter that information. something Like this: When 127.0.0.1/test.html&ID=1234 location.href = "127.0.0.1/newpage.html" if (location.href == newpage.html){ var e = document.GetElementById("Loginbx"); e.Value = ID } I don't have access to modify 127.0.0.1/test.html nor newpage.html but would like to pass variables to them from another. Is this possible?

    Read the article

  • Merge two data frames together that have the same variable names and data types

    - by Brandon
    I have tried the merge function to merge two csv files that I imported. They both have the same variable names and data types but each time I run merge all that I get is an object that contains the names of the two data frames. I have tried the following: # ex1 obj <- merge(obj1, obj2, by=obj) # ex2 obj <- merge(obj1, obj2, all) and several other iterations of the above. Is merge the correct function? If so, what am I doing wrong?

    Read the article

  • Error in jsp program calling servlet variable

    - by megala
    hi i created one webapplication project.It containe one servlet file jsp file. I created one string variable in servlet and assign some value like /* sampleservlet.java *******/ String s=" WELCOME" My constraints I want to display the string in my jsp file.so that i import the servlet file inj jsp and i created object as ---call--- jsp file contain following coding <%sampleservlet call ;% <%call.s% But it shows error how to solve this?

    Read the article

  • Should I sanitize EVERY form variable passed along?

    - by Camran
    I have a form with many fields... The action is set to a php page which queries mysql... Should I sanitize with mysql_real_escape_string every single variable? Or can I ignore sanitizing drop-lists and radios for instance? Also, besides mysql_real_escape_string, what else should I do to prevent attacks? Thanks

    Read the article

  • save Date Number in PHP variable.

    - by Denoteone
    This question goes along with another one of my post that I already accepted How do I get the "date number" in php 2010-08-24 20:00:00.000 I want to assign the current date number to a variable $current_date_num so I can use it in my query to compare what is already in the database. $query ="SELECT * FROM Reservations WHERE [Room_ID] = '$field' AND [Meeting Start] > '$current_date_num' ORDER BY [Meeting Start] asc ";

    Read the article

  • Use the keyword class as a variable name in C++

    - by Leif Andersen
    I am having trouble writing C++ code that uses a header file designed for a C file. In particular, the header file used a variable name called class: int BPY_class_validate(const char *class_type, PyObject *class, PyObject *base_class, BPY_class_attr_check* class_attrs, PyObject **py_class_attrs); This works in C as class isn't taken as a keyword, but in C++, class is. So is there anyway I can #include this header file into a c++ file, or am I out of luck? Thank you.

    Read the article

  • TERM environment variable not set

    - by rahkarp
    I'm using python to develop an app and want to view running processes.The code txt = commands.getoutput("top -d 1") print txt gives an error "TERM Environment Variable not set" Can someone tell me what this means and how to solve this

    Read the article

< Previous Page | 51 52 53 54 55 56 57 58 59 60 61 62  | Next Page >