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  • llvm clang struct creating functions on the fly

    - by anon
    I'm using LLVM-clang on Linux. Suppose in foo.cpp I have: struct Foo { int x, y; }; How can I create a function "magic" such that: typedef (Foo) SomeFunc(Foo a, Foo b); SomeFunc func = magic("struct Foo { int x, y; };"); so that: func(SomeFunc a, SomeFunc b); // returns a.x + b.y; ? Note: So basically, "magic" needs to take a char*, have LLVM parse it to get how C++ lays out the struct, then create a function on the fly that returns a.x + b.y; Thanks!

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  • Acceessing some aggregate functions in a linq datasource in a GridView

    - by Stephen Pellicer
    I am working on a traditional WebForms project. In the project I am trying out some Linq datasources with plans to eventually migrate to an MVC architecture. I am still very new to Linq. I have a GridView using a Linq datasource. The entities I am showing has a to many relationship and I would like to get the maximum value of a column in the many side of the relationship. I can show properties of the base entity in the gridview: <asp:TemplateField HeaderText="Number" SortExpression="tJobBase.tJob.JobNumber"> <ItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%# Bind("tJobBase.tJob.JobNumber") %>'> </asp:Label> </ItemTemplate> </asp:TemplateField> I can also show the count of the many related property: <asp:TemplateField HeaderText="Number" SortExpression="tJobBase.tJob.tHourlies.Count"> <ItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%# Bind("tJobBase.tJob.tHourlies.Count") %>'> </asp:Label> </ItemTemplate> </asp:TemplateField> Is there a way to get the max value of a column called WeekEnding in the tHourlies collection to show in the GridView?

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  • sqlite3 date and interval functions

    - by umuthorax
    Hi, I wonder whether sqlite3 supports interval function. The following statement is accepted by PostgreSQL, however sqlite3 failed to parse it; select ... from orders where ... and o_orderdate < date '1995-03-01' + interval '3' month Error: near line 4: near "'1995-03-01'": syntax error Then, I modified the statement a little bit such as; and o_orderdate < date('1995-03-01') + interval '3' month This time the error was; Error: near line 4: near "'3'": syntax error Unfortunately, same trick did not work for the interval function i.e. and o_orderdate < date('1995-03-01') + interval('3' month) or and o_orderdate < date('1995-03-01') + interval('3') month or even and o_orderdate < date('1995-03-01') + interval(3 month) still gave me the syntax error. Maybe sqlite3 does not support interval function or am I missing something in its usage? Thanks a lot

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  • PHP: How To call Standard Library Functions

    - by Andi
    Hi, I'm starting with PHP for dynamic web pages. I have some libaries written in ANSI C for getting/setting parameters and other proprietary stuff. I wonder, is there a simple solution to use a wrapper inside PHP to call this funtions? Is there a already existing class/library? What would be the best practice to do this on my own? I don't want do make calls to external applications and use stdin/stdout! Is there a simple example available? I don't want to dig through the Zend documentation for now, I only need a feeling for the complexity. Thanks, kind regards, Andi

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  • Combining multiple jQuery functions

    - by Mark
    Is there any way to combine all of this to reduce the amount of js? This is just an example of some of the jquery dialogs I have in my site, there are a few more too. Thanks. //initiate Search refinement dialog here $("#chooseMoreCnt, #chooseMoreCat, #chooseMorePr").dialog({ bgiframe: true, autoOpen: false, width: 500, modal: true, open: function(type, data) { $(this).parent().appendTo(jQuery("form:first")); } }); //trigger country dialog $('a.chooseMoreCnt').click(function() { $('#chooseMoreCnt').dialog('open'); return false; }); //trigger category dialog $('a.chooseMoreCat').click(function() { $('#chooseMoreCat').dialog('open'); return false; }); //trigger price dialog $('a.chooseMorePr').click(function() { $('#chooseMorePr').dialog('open'); return false; });

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  • PHP exec() and system() functions always return false in IIS

    - by Loftx
    Hi there, I'm trying to use the PHP exec() or system() (or any other similar function) to run a batch file, but I can't seem to get these to return anything. The simplest example I've seen is this, which outputs nothing: <?php echo system('dir'); ?> The script is running on a windows XP machine on IIS with PHP installed and I've also tried it on my shared hosting account running windows 2003 server/IIS. Can anyone suggest what I need to do to get this working, or provide any commands I can use for troubleshooting? Cheers, Tom

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  • Python os module path functions

    - by broiyan
    From the documentation: os.path.realpath(path) Return the canonical path of the specified filename, eliminating any symbolic links encountered in the path (if they are supported by the operating system). When I invoke this with an extant file's name, I get the path to it: /home/myhome/myproject. When I invoke this with a 'nonsense.xxx' string argument, I still get a path to /home/myhome/myproject/nonsense.xxx. This is a little inconsistent because it looks like nonsense.xxx is taken to be a directory not a file (though it is neither: it does not exist). When I invoke this with a null string file name, I still get a path to /home/myhome/myproject. How can I account for this behaviour when the documentation says so little about realpath()? (I am using Python 2.5.) Edit: Somebody suggested a way to test if files exist. My concern is not to test if files exist. My concern is to account for behaviour.

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  • Default values on arguments in C functions and function overloading in C

    - by inquam
    Converting a C++ lib to ANSI C and it seems like though ANSI C doesn't support default values for function variables or am I mistaken? What I want is something like int funcName(int foo, bar* = NULL); Also, is function overloading possible in ANSI C? Would need const char* foo_property(foo_t* /* this */, int /* property_number*/); const char* foo_property(foo_t* /* this */, const char* /* key */, int /* iter */); Could of course just name them differently but being used to C++ I kinda used to function overloading.

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  • Save jQuery callback functions in a separate file

    - by Danny Herran
    Probably I missed something, but lets say I have this: $('a.delete').click(function(){ resp=window.confirm("Are you sure you want to delete this?"); if(resp) return true; else return false; } Now, I want to save that callback function into a separate js file, because I will use it in several pages. My logic told me to do this: $('a.del').click(delete_element()); Having my js file like this: function delete_element(){ resp=window.confirm("Are you sure you want to delete this?"); if(resp) return true; else return false; } This doesn't work. Everytime my page loads, it displays the confirm window, even if I haven't clicked the link. It is clear that my logic failed this time. What am I missing?

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  • Dynamic Variables Within Functions

    - by Ryan
    Why does this work: function myfunction($v) { $query = $v['host'] == '1'; return ( $query ); } $output = array_filter($recordset,myfunction); print_r($output); Whereas this script, which tries to accomplish the same thing with variables, does not? $column1 = 'host'; $value1 = 1; $query1 = '$v[\''.$column1.'\'] == '.$value1; function myfunction($v) { $query = $GLOBALS['query1']; return ( $query ); } $output = array_filter($recordset,myfunction); print_r($output); Any help would be great. Thanks!

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  • Javascript functions Math.round(num) vs num.toFixed(0) and browser inconsistencies

    - by eft
    Edit: To clarify, the problem is how to round a number to the nearest integer. i.e. 0.5 should round to 1 and 2.5 shoud round to 3. Consider the following code: <html><head></head><body style="font-family:courier"> <script> for (var i=0;i<3;i++){ var num = i + 0.50; var output = num + " " + Math.round(num) + " " + num.toFixed(0); var node = document.createTextNode(output); var pElement = document.createElement("p"); pElement.appendChild(node); document.body.appendChild(pElement); } </script> </body></html> In Opera 9.63 I get: 0.5 1 0 1.5 2 2 2.5 3 2 In FF 3.03 I get: 0.5 1 1 1.5 2 2 2.5 3 3 In IE 7 I get: 0.5 1 0 1.5 2 2 2.5 3 3 Note the bolded results. Does this mean that toFixed(0) should be avoided?

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  • call multiple c++ functions in python using threads

    - by wiso
    Suppose I have a C(++) function taking an integer, and it is bound to (C)python with python api, so I can call it from python: import c_module c_module.f(10) now, I want to parallelize it. The problem is: how does the GIL work in this case? Suppose I have a queue of numbers to be processed, and some workers (threading.Thread) working in parallel, each of them calling c_module.f(number) where number is taken from a queue. The difference with the usual case, when GIL lock the interpreter, is that now you don't need the interpreter to evaluate c_module.f because it is compiled. So the question is: in this case the processing is really parallel?

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  • Implementing callback functions in C

    - by robertjohn123
    Hi, I am a newbie to C.I am trying to implement callback function using function pointers. I am getting an error :test_callback.c:10: error: expected identifier or ‘(’ before ‘void’ when I try to compile the following program: #include<stdio.h> void (*callback) (void); void callback_proc () { printf ("Inside callback funtion\n"); } void register ((void (*callback) (void))) { printf ("Inside registration \n"); callback (); /* Calling an initial callback with function pointer */ } int main () { callback = callback_proc;/* Assigning function to the function pointer */ register (callback);/* Passing the function pointer */ return 0; } What is this error?Can anyone help?

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  • Aggregate Functions and Group By Problems

    - by David Stein
    If we start with the following simple SQL statement which works. SELECT sor.FPARTNO, sum(sor.FUNETPRICE) FROM sorels sor GROUP BY sor.FPARTNO FPartNo is the part number and the Funetprice is obviously the net price. The user also wants the description and this causes a problem. If I follow up with this: SELECT sor.FPARTNO, sor.fdesc, sum(sor.FUNETPRICE) FROM sorels sor GROUP BY sor.FPARTNO, sor.fdesc If there are multiple variations of the description for that part number, typically very small variations in the text, then I don't actually aggregate on the part number. Make sense? I'm sure this must be simple. How can I return the first fdesc that corresponds to the part number? Any of the description variations would suffice as they are almost entirely identical. Edit: The description is a text field.

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  • Masked functions in R

    - by user227290
    This is a newbie question in R. If you have two libraries in R with same function name (and one masking the other) then how do you use the masked function. A concrete example: Both UsingR and QRMlib have the function QQPlot(), and UsingR's QQplot is masking that of QRMlib. How can I use the QQplot function of QRMlib. Thank you

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  • OpenGL ES functions not accepting values originating outside of it's view

    - by Josh Elsasser
    I've been unable to figure this out on my own. I currently have an Open GLES setup where a view controller both updates a game world (with a dt), fetches the data I need to render, passes it off to an EAGLView through two structures (built of Apple's ES1Renderer), and draws the scene. Whenever a value originates outside of the Open GL view, it can't be used to either translate objects using glTranslatef, or set up the scene using glOrthof. If I assign a new value to something, it will work - even if it is the exact same number. The two structures I have each contain a variety of floating-point numbers and booleans, along with two arrays. I can log the values from within my renderer - they make it there - but I receive errors from OpenGL if I try to do anything with them. No crashes result, but the glOrthof call doesn't work if I don't set the camera values to anything different. Code used to set up scene: [EAGLContext setCurrentContext:context]; glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer); //clears the color buffer bit glClear(GL_COLOR_BUFFER_BIT); glMatrixMode(GL_PROJECTION); //sets up the scene w/ ortho projection glViewport(0, 0, 320, 480); glLoadIdentity(); glOrthof(320, 0, dynamicData.cam_x2, dynamicData.cam_x1, 1.0, -1.0); glClearColor(1.0, 1.0, 1.0, 1.0); /*error checking code here*/ "dynamicData" (which is replaced every frame) is created within my game simulation. From within my controller, I call a method (w/in my simulation) that returns it, and pass the result on to the EAGLView, which passes it on to the renderer. I haven't been able to come up with a better solution for this - suggestions in this regard would be greatly appreciated as well. Also, this function doesn't work as well (values originate in the same place): glTranslatef(dynamicData.ship_x, dynamicData.ship_y, 0.0); Thanks in advance. Additional Definitions: Structure (declared in a separate header): typedef struct { float ship_x, ship_y; float cam_x1, cam_x2; } dynamicRenderData; Render data getter (and builder) (every frame) - (dynamicData)getDynRenderData { //d_rd is an ivar, zeroed on initialization d_rd.ship_x = mainShip.position.x; d_rd.ship_y = mainShip.position.y; d_rd.cam_x1 = d_rd.ship_x - 30.0f; d_rd.cam_x2 = d_rd.cam_x1 + 480.0f; return d_rd; } Zeroed at start. (d_rd.ship_x = 0;, etc…) Setting up the view. Prototype (GLView): - (void)draw: (dynamicRenderData)dynamicData Prototype (Renderer): - (void)drawView: (dynamicRenderData)dynamicData How it's called w/in the controller: //controller [glview draw: [world getDynRenderData]]; //glview (within draw) [renderer drawView: dynamicData];

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  • Common utility functions for Perl .t tests

    - by zedoo
    Hi I am getting started with Test::More, already have a few .t test scripts. Now I'd like to define a function that will only be used for the tests, but accross different .t files. Where's the best place to put such a function? Define another .t without any tests and require it where needed? (As a sidenote I use the module structure created by Module::Starter)

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  • functions with same names in javascript

    - by biju
    Hi, I tried to write a function on a js file and another function with the same name in the page.I expected an error but no error came and i got only the function from the js file to execute.How is this possible.Even if i write a function in a separate js file,everything is rendered in a single html file.Then how come it is possible <script type="text/javascript" language="javascript" src="JScript.js" /> <script language="javascript"> function Boo() { alert("Hai new"); } </script> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:Button runat=server OnClientClick="Boo();" Text="Click" /> </div> </form> </body> and in the js file function Boo() { alert("Hai"); }

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  • c++ new & delete and string & functions

    - by Newbie
    Okay the previous question was answered clearly, but i found out another problem. What if i do: char *test(int ran){ char *ret = new char[ran]; // process... return ret; } And then run it: for(int i = 0; i < 100000000; i++){ string str = test(rand()%10000000+10000000); // process... // no need to delete str anymore? string destructor does it for me here? } So after converting the char* to string, i dont have to worry about the deleting anymore?

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  • how to Invoke User-Defined Functions That Return a Table Data Type

    - by nectar
    here my code- create function dbo.emptable() returns Table as return (select id, name, salary from employee) go select dbo.emptable() error: Msg 4121, Level 16, State 1, Line 1 Cannot find either column "dbo" or the user-defined function or aggregate "dbo.emptable", or the name is ambiguous. while when I run sp_helptext emptable it shows- create function dbo.emptable() returns Table as return (select id, name, salary from employee) it means function exists in database then why it is giving such error?

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  • JavaFX - reduce() function to show how to pass functions as parameters

    - by Helper Method
    At the moment I'm writing a JavaFX guide for Java developers. In order to show how to pass a function to another funtion i adopted the reduce() function found in Effective Java: function reduce(seq: Integer[], f: function(: Integer, : Integer): Integer, init: Integer) { var result = init; for (i in seq) { result = f(i, result); } result } def nums = [1 .. 10]; println(reduce(nums, function(a: Integer, b: Integer) { a + b }, 0)); // prints 55 println(reduce(nums, function(a: Integer, b: Integer) { a * b }, 0)); // prints 3628800 Now I wonder if this example is not to hard for someone starting to learn JavaFX. The tutorial is targeted to programmers with a solid understanding of Java, yet I'm not quite sure about the usefulness of the example. Any ideas?

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  • ajaxSubmit options success & error functions aren't fired

    - by Thommy Tomka
    jQuery 1.7.2 jQuery Validate 1.1.0 jQuery Form 3.18 Wordpress 3.4.2 I am trying to code a contact/ mail form in above environment/ with above jQuery libs. Now I am having a problem with the jQuery Form JS: I have taken the original code from the developers page for ajaxSubmit and only altered the target option to an ID which exists in my HTML source and replaced $ with jQuery in function showRequest. The problem is, that the function namend after success: does not fire. I tried the same with error: and again nothing fired. Only complete: did and the function I placed there alerted the responseText from the receiving script. Does anyone has an idea whats going wrong? Thanks in advance! Thomas jQuery(document).ready(function() { var options = { target: '#mail-status', // target element(s) to be updated with server response beforeSubmit: showRequest, // pre-submit callback success: showResponse, // post-submit callback // other available options: //url: url // override for form's 'action' attribute //type: type // 'get' or 'post', override for form's 'method' attribute //dataType: null // 'xml', 'script', or 'json' (expected server response type) //clearForm: true // clear all form fields after successful submit //resetForm: true // reset the form after successful submit // $.ajax options can be used here too, for example: //timeout: 3000 }; jQuery("#mailform").validate( { submitHandler: function(form) { jQuery(form).ajaxSubmit(options); }, errorPlacement: function(error, element) { }, rules: { author: { minlength: 2, required: true }, email: { required: true, email: true }, comment: { minlength: 2, required: true } }, highlight: function(element) { jQuery(element).addClass("e"); jQuery(element.form).find("label[for=" + element.id + "]").addClass("e"); }, unhighlight: function(element) { jQuery(element).removeClass("e"); jQuery(element.form).find("label[for=" + element.id + "]").removeClass("e"); } }); }); // pre-submit callback function showRequest(formData, jqForm, options) { // formData is an array; here we use $.param to convert it to a string to display it // but the form plugin does this for you automatically when it submits the data var queryString = jQuery.param(formData); // jqForm is a jQuery object encapsulating the form element. To access the // DOM element for the form do this: // var formElement = jqForm[0]; alert('About to submit: \n\n' + queryString); // here we could return false to prevent the form from being submitted; // returning anything other than false will allow the form submit to continue return true; } // post-submit callback function showResponse(responseText, statusText, xhr, $form) { // for normal html responses, the first argument to the success callback // is the XMLHttpRequest object's responseText property // if the ajaxSubmit method was passed an Options Object with the dataType // property set to 'xml' then the first argument to the success callback // is the XMLHttpRequest object's responseXML property // if the ajaxSubmit method was passed an Options Object with the dataType // property set to 'json' then the first argument to the success callback // is the json data object returned by the server alert('status: ' + statusText + '\n\nresponseText: \n' + responseText + '\n\nThe output div should have already been updated with the responseText.'); }

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  • Formating with printf in using two functions

    - by user317203
    I am trying to output a document that looks like this. http://pastebin.com/dpBAY8Sb my issue is that I cannot find how to format the output I have to have a floating poing and format the distance between columns. My current code looks something like this. if (defined $longitude){ printf FILE ("%-8s %.6f","",$longitude); }else{ $longitude = ""; printf FILE ("%-20s ",$longitude); } but the extra "" throws off the whole column and it looks like this. pastebin.com/kcwHyNwb

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