RME | Regularizing Matrix Factorization with User and Item | Recommender System library

1. Do not escape
2. Why await?
3. Use \r$ (end) instead of ^\r (begin)
4. or trim/trimEnd

RegExp

If you catch an exception just to throw it further, it makes no sense of catching it in first instance. That is the problem in your example, don't throw the exception in the catch block, just handle it(log a message or something).

I've never used the TeeGrid before, but the following worked fine first time for me in Delphi Tokyo:

1. Download the TeeGrid trial from Steema.Com & install.

2. Create new multi-device app and place a TeeGrid and a FDMemTable on the form.

3. Load FDMemTable1 with the file Parts.Fds from the Delphi samples Data directory. Note, I did not then create any FieldDefs as I mentioned in my comment earlier as what I'm describing works without them.

4. Set the DataSource property of TeeGrid1 to FDMemTable1. TeeGrid1 immediately creates columns for each of the Parts fields and populates them with data - see screenshot below. I don't ordinarily include screenshots but in this case thought I would as what I got was so clearly at odds with what you've reported.

Your TeeGrid etc are obviously more complicated than mine. so the best I can suggest is that you backtrack to step 2 and see if you can replicate my result with your data (either at design time or run time). It might be worth loading your FDMemTable with some data at design time, as my impression is that live bindings is less grief-prone when the datasource has some data.

Incidentally, fwiw the results of my own attempts to set up live bindings even with a regular TGrid have been rather patchy, until I discovered that instead of messing with the LB components myself, simply starting with a fresh TGrid, right-clicking on it and leaving the Live Bindings Wizard to do its stuff consistently works fine.

You need to do a self join of the following tables: CustContacts, Addresses and SalesPrograms on some or all these columns: CC.FirstName, CC.LastName, CC.Email, Addresses.City, Addresses.State, Addresses.Postal, SP.Name. Next, you will need to concatenate these 3 values: SP.Name, ', ', SP1.Name. This is assuming you have SalesPrograms AS SP and SalesPrograms AS SP1 in your self join.

Yo have clearly bound a DataTable to your ComboBoxes, which means that every item is a DataRowView, which means that the SelectedItem is a DataRowView, hence the error message when you try to concatenate the SelectedItem here:

So there is one policy missing. That policy has to attach to each user that is iot:AttachPrincipalPolicy

Probably, one of the objects is not assigned, I suspect it could be the Columns[1] (note that the Columns collection is zero based index, so the first column is Columns[0])

Try this:

Saoud, have you checked this tutorial on W3Schools?

You have many options to do this. Also, some frameworks have their own styles for checkboxes.

Examples:

• Materialize
• Foundation Switch Buttons
• UIKit Custom Controls

Mainly what you do in these cases is override the default behavior and appearance of checkboxes and use images or colors.

The PNG format has a fixed header that consists of the 8 bytes 89 50 4e 47 0d 0a 1a 0a which, when converted to base64, look like this:

iVBORw0KGgo=

As you can see, it ends with a padding character "=", which will not be there in a real base64 representation of an image, and instead of "o" there could be a different character depending on the bytes after the header.

So you can easily recognize a base64 encoded PNG by comparing the first characters of the base64 string with

iVBORw0KGg

This principle works for all file formats that have a fixed header.