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  • How do check if PDO object is connected properly inside a different class?

    - by tgun926
    I want to fetch some information from my mysql database in a class, so I'm passing in the PDO object into a __construct function, and working from there. However, what's an elegant way of checking to see if the PDO object was correctly created, and that the connection is open when the Table class is instantiated? class Table{ public function __construct(PDO $db, $week){ try{ $query = $db -> query ("SELECT * FROM `table1` where `day` = 'monday'"); } catch(PDOExeption $e){ echo 'error: '. $e->getMessage(); //die(); } } } I don't think this code does what I want.

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  • iOS Development: How can I encapsulate a string in an NSData object?

    - by BeachRunnerJoe
    Hello. I'm building a multiplayer game on the iPhone and I need to send string data to the other players in the game. To do that, I need to encapsulate my NSString* string data in an NSData object somehow. Here's an example of how my code is structured... typedef struct { PACKETTYPE packetType; ??? stringToSend; //<---not sure how to store this } StringPacket; StringPacket msg; msg.packetType = STRING_PACKET; msg.stringToSend = ... // <---not sure what to do here NSData *packet = [NSData dataWithBytes:&msg length:sizeof(StringPacket)]; So my question is, if StringPacket is a struct defined in my header, what type should the stringToSend property be so that I can easily call the dataWithBytes method of NSData to encapsulate the packet data in an NSData object? Thanks for your wisdom!

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  • Can I replace a method on a jQuery UI object? How?

    - by Cheeso
    If I want to tweak some of the capability of a jQuery UI object, by replacing one of the functions, how would I go about doing that? Example: suppose I wanted to modify the way the jQuery autocomplete widget rendered the suggestions. There's a method on the autocomplete object that looks like this: _renderItem: function( ul, item) { return $( "<li></li>" ) .data( "item.autocomplete", item ) .append( "<a>" + item.label + "</a>" ) .appendTo( ul ); }, Could I replace this? How? What syntax would I use?

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  • Using an ActiveX object from an Outlook hosted webpage - possible?

    - by Nic Wise
    I'm trying to do the following: We have an outlook plugin, written in .NET (and C++). It does various things, and is manually installed on the end users machines (usually via AD deployment or similar) We are changing our search to use a webpage-based search, but from within outlook. That part is ok, however we want to communicate from the webpage to the surrounding outlook application. We can call into outlook by exposing an ActiveX object from our plugin, however we get security warnings, even if it's signed and marked as safe for scripting. Is this even possible? Has anyone done it? Anyone have a better way of doing it? We only need to pass in a small amount of data (a message id), and only from the webpage to outlook [update]: This is the error: automation server can't create object. We can get around it a bit by turning things off in IE, but thats not a good way to do it! Thanks

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  • Can code formatting lead to change in object file content?

    - by kumar
    I have run though a code formatting tool to my c++ files. It is supposed to make only formatting changes. Now when I built my code, I see that size of object file for some source files have changed. Since my files are very big and tool has changed almost every line, I dont know whether it has done something disastrous. Now i am worried to check in this code to repo as it might lead to runtime error due to formatting tool. My question is , will the size of object file be changed , if code formatting is changed.?

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  • What is the advantage of creating an enumerable object using to_enum in Ruby?

    - by Jason
    Hi, Why would you create a proxy reference to an object in Ruby, by using the to_enum method rather than just using the object directly? I cannot think of any practical use for this, trying to understand this concept & where someone might use it, but all the examples I have seen seem very trivial. For example, why use: "hello".enum_for(:each_char).map {|c| c.succ } instead of "hello".each_char.map {|c| c.succ } I know this is a very simple example, does anyone have any real-world examples? Thanks!

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  • Cannot change UIImageView frame in a custom table cell.

    - by jkally
    I have a custom table cell. In it I have put (via the IB) an image view of a certain frame In 'cellForRowAtIndexPath', under certain conditions, I would like to modify the frame of this UIImageView, so I write something like: UIImageView *imgv = (UIImageView *)[cell viewWithTag:1]; CGRect r = CGRectMake(20.0, 20.0, 10.0, 10.0); imgv.frame = r; But nothing expected happens (The frame does move a little though not to where I want, but doesn't change its size at all);

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  • Easy one? Access an object's property by using a variable in C# [closed]

    - by ozke
    Possible Duplicate: Property Name and need its value Hi, This one should be easy for most people. I'd like to access a normal variable in an object (let's say example) by using a variable value. E.g.: I have a an array with a list of variable names and I want to get the information from the object by using them. Obviously this is wrong: string[] variable_names = new string[] {"name", "surname"}; myObject.variable_names[0] = 1; myObject.variable_names[1] = 1; In other languages (not C#) I use: myObject[variable_names[0]] = 1; I know the example looks stupid but it was just a way of explaining it. Thanks in advance :)

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  • How to retrieve the TabHost object, if you're not using TabActivity?

    - by Lee Olayvar
    I am attempting to use a few of the simple android examples for Tab Views. One thing i am attempting to do different than all the examples i've seen so far, is to not use a TabActivity. I am trying to use a normal activity, which means i need to retrieve the TabHost object some how, so i can add tabs and etc to it. How can this be done? If you wanted to retrieve a view, you can simply use findViewById(R.id.blah), but how can you retrieve the TabHost object in a similar manner?

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  • Recommand a Perl module to persist a large object for re-use between runs?

    - by Alnitak
    I've got a large XML file, which takes 40+ seconds to parse with XML::Simple. I'd like to be able to cache the resulting parsed object so that on the next run I can just retrieve the parsed object and not reparse the whole file. I've looked at using Data::Dumper but the documentation is a bit lacking on how to store and retrieve its output from disk files. Other classes I've looked at (e.g. Cache::Cache) appear designed for storage of many small objects, not a single large one. Can anyone recommend a module designed for this?

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  • Prevent custom AccessoryView from showing selection when it's UITableViewCell is selected.

    - by groomsy
    To reproduce this, create a UITableView that contains cells with custom AccessoryViews (such as buttons to perform a specific action where touching the other part of the UITableViewCell should perform a different action). If you touch (select) the UITableView, the AccessoryView shows selection (as thought it was touched) as well. I want to prevent this and only show the AccessoryView's selected state when they actually touch the AccessoryView. Thanks in advance, groomsy

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  • Should I put a try-finally block after every Object.Create?

    - by max
    I have a general question about best practice in OO Delphi. Currently, I put try-finally blocks anywhere I create an object to free that object after usage (to avoid memory leaks). E.g.: aObject := TObject.Create; try aOBject.AProcedure(); ... finally aObject.Free; end; instead of: aObject := TObject.Create; aObject.AProcedure(); .. aObject.Free; Do you think it is good practice, or too much overhead? And what about the performance?

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  • Best way to save to nsuserdefaults for custom class?

    - by cannyboy
    If I have a custom class Person which has three variables (which are propertized and synthesized): NSString* theName; float* theHeight; int theAge; Person instances are stored in an NSArray 'Group'. There is only one Group. What is the best way of string and loading the Group in NSUserDefaults? (bearing in mind that float and int are not legal for NSUserDefaults)

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