Search found 590 matches

by phaworth
Thu Jul 09, 2015 7:43 pm
Forum: Getting Started with LiveCode - Experienced Developers
Topic: Server app+Client app+Database
Replies: 3
Views: 907

Re: Server app+Client app+Database

Years and years ago in a galaxy far away, I worked with a database system that provided record level locking functionality in its api. So many of this type of issue would be solved in SQL provided the same functionality. I think you can get down to table level locking in mySQL (and maybe other imple...
by phaworth
Thu Jul 09, 2015 7:38 pm
Forum: Databases
Topic: French char with SQLite database
Replies: 6
Views: 2337

Re: French char with SQLite database

SQLite does support unicode and you can set the encoding when the database is created. However, it doesn't do anything automatic to encode data when you insert data or decode it when you select it, that's your application's responsibility. If the OP is using LC 7 or later, it's really easy to encode...
by phaworth
Fri Jul 03, 2015 10:46 pm
Forum: Getting Started with LiveCode - Complete Beginners
Topic: datagrid reordering itself
Replies: 5
Views: 816

Re: datagrid reordering itself

I agree, dgText is perfectly fine unless there's a good reason not to use it like multiple lines, special characters, etc. Not sure why what I suggested would be a kluge. I think it's a very common way of addressing the elements of an array when their keys are numeric, or at least I do it a lot :-) ...
by phaworth
Fri Jul 03, 2015 7:23 pm
Forum: Getting Started with LiveCode - Complete Beginners
Topic: datagrid reordering itself
Replies: 5
Views: 816

Re: datagrid reordering itself

Try something like this:

Code: Select all

put the keys of tData into tKeys
sort tKeys numeric
repeat for each line rKey in tKeys
   --do whatever with tData[rKey]
end repeat
by phaworth
Thu Jul 02, 2015 8:50 pm
Forum: Getting Started with LiveCode - Complete Beginners
Topic: String find-replace issue [Solved]
Replies: 6
Views: 1255

Re: String find-replace issue [Solved]

Save yourself a lot of time and trouble and get Alex Tweedly's csv omport hamdler. It's really fast and deals with a lot of corner cases.
Pete
by phaworth
Thu Jul 02, 2015 8:47 pm
Forum: Getting Started with LiveCode - Complete Beginners
Topic: Undocumented Feature in Repeat?
Replies: 2
Views: 454

Re: Undocumented Feature in Repeat?

That's correct Lagi. Don't think there are any downsides to it, I haven't seen it documented anywhere. I seem to recall there's another situation where a variable doesn't need to be explicitly declared but can't remember what it is - maybe matchtext?
Pete
by phaworth
Thu Jul 02, 2015 8:43 pm
Forum: Getting Started with LiveCode - Complete Beginners
Topic: Local: name shadows another variable BUG!!!!
Replies: 14
Views: 2327

Re: Local: name shadows another variable BUG!!!!

The debugger angle sounds promising. I can't be 100% sure but I think that applies to !y experience too. I'll keep track of that grom now on.
Pete
by phaworth
Thu Jul 02, 2015 2:32 am
Forum: Getting Started with LiveCode - Complete Beginners
Topic: Local: name shadows another variable BUG!!!!
Replies: 14
Views: 2327

Re: Local: name shadows another variable BUG!!!!

I will try swithcing variable preservation off and see what happens. To be honest, I've never been quite sure what variable preservation does. I've assumed that if I have a script cloal variable and I make a change to a handler in the same script, it will preserve its value. If that's the case, then...
by phaworth
Wed Jul 01, 2015 8:03 pm
Forum: Getting Started with LiveCode - Complete Beginners
Topic: Local: name shadows another variable BUG!!!!
Replies: 14
Views: 2327

Re: Local: name shadows another variable BUG!!!!

I've suffered form this this since the day I started using strict compilation mode. In my case, restarting LC seems to fix the problem but I sometimes end up having to do that several times a day.. In some cases, all works fine over the course of several compilations and suddenly, up pops the error....
by phaworth
Tue Jun 30, 2015 3:16 am
Forum: Databases
Topic: Functionality of MySQL records showing in a data grid
Replies: 11
Views: 2423

Re: Functionality of MySQL records showing in a data grid

How are you loading the data into the database? Using a datagrid form introduces another level of complexity in that it's your responsibility to load the data from the dgData array into the controls in the datagrid. Rather than me try to explain it here, take a look at section 2.5 of the Datagrid Ma...
by phaworth
Sat Jun 27, 2015 8:04 pm
Forum: Databases
Topic: Functionality of MySQL records showing in a data grid
Replies: 11
Views: 2423

Re: Functionality of MySQL records showing in a data grid

The datagrid library sends a selectionChanged message to your datagrid when you click on a line in it. Write a selectionChanged handler in your datagrid group's script to get the contents of the line and put them into whatever controls you want. For example: on selectionChanged pHilitedIndex, pPrevH...
by phaworth
Sat Jun 27, 2015 12:30 am
Forum: Getting Started with LiveCode - Complete Beginners
Topic: Sqlite: storing fields from multiple cards in one table
Replies: 13
Views: 1801

Re: Sqlite: storing fields from multiple cards in one table

Here's a few techniques, assuming you store your data in a custom property of your stack named cData. First, put all your data handlers in the script of your main stack. That way, if you decide to store your data in arrays or in a text file, you just have to change your central handlers. You might e...
by phaworth
Fri Jun 26, 2015 9:39 pm
Forum: Getting Started with LiveCode - Complete Beginners
Topic: Sqlite: storing fields from multiple cards in one table
Replies: 13
Views: 1801

Re: Sqlite: storing fields from multiple cards in one table

I agree with Richard. SQLite is great but a lot of learning and overhead for only 20 records in one table. If I ever find myself with a schema that has only 1 table, it's a good sign that an SQL database probably isn't the right tool. I'd use a custom property of your stack to hold the data if you d...
by phaworth
Wed Jun 24, 2015 10:08 pm
Forum: Getting Started with LiveCode - Complete Beginners
Topic: SQLite column comes in with £
Replies: 5
Views: 843

Re: SQLite column comes in with £

Things do "just work" as long as the data remains within Livecode. You have to do a little more work, but not much, when the data is read/written from/to any external file. To save you the trouble of getting the presentation, the trick is to use textDecode when fetching data from the database and te...
by phaworth
Tue Jun 23, 2015 8:15 pm
Forum: Getting Started with LiveCode - Experienced Developers
Topic: Stack hangs on open
Replies: 10
Views: 1387

Re: Stack hangs on open

Oh yes, don't forget to disable "Suppress Messages" when you're ready to open the stack again! Another thing you might find useful if you don't already know about it. If you right click anywhere on your stack when it's open and you're in Edit mode, at the bottom of the popup menu, you'll see options...

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