CListCtrl - get the length of the item text - winapi

I'm deriving from CListCtrl. Is there a way to find out how long the text contained in item i subitem 0 (first column) is? That info is required by GetItemText().

There are 2 overloads for GetItemText(), you should use the one with 2 params. Like this:
CString txt = CListCtrl::GetItemText(item, column);
http://msdn.microsoft.com/en-us/library/cbtzx5b1%28v=vs.100%29.aspx

Related

google spreadsheets - filter a cell by it's address

I am using the filter function to find non blank values, the classic:
=FILTER(A2:A99, NOT(ISBLANK(B2:B99)))
To find all the column A headings that have a non-blank value in column B.
But I would also like to always include the last value regardless of it's ISBLANK, something like:
=FILTER(A2:A99, (CELL("address",A2:A99)="$A$99") OR NOT(ISBLANK(B2:B99)))
But this gives me an error, leading me to the strange question of how do I get this to work:
=FILTER(A2:A99, CELL("address",A2:A99)="$A$99")
Or something similar?
As CELL function does not play well in array formulas, you can get addresses as strings for cells like this:
=ARRAYFORMULA(ADDRESS(ROW(A2:A99), COLUMN(A2:A99)))
As for your original problem, you can just add the last cell as the last row:
={FILTER(A2:A98, NOT(ISBLANK(B2:B98))); A99}
Or a dynamic version:
=FILTER(A2:A99, (NOT(ISBLANK(B2:B99))) + (ROW(A2:A99) = (ROWS(A2:A99) + ROW(A2) - 1)))

Accessing cells with offset reference in Numbers with Applescript

How can I reference a cell relative to another cell in Applescript like in Excel VBA?
In Excel VBA I could use "offset" to set the value of cell D2:
Range("A1").Offset(1,3).Value = "Example"
I searched everywhere but there doesn't seem to be an "offset"-command in Numbers Applescript, despite it's so super handy.
Any help is much appreciated!
To complement the excellent answer by David...
If you have a need to mimic the VBA expression, the example code from David's answer can be rolled into a handler, as in the example below.
on setCellOffsetValue(cl, co, ro, val)
tell application "Numbers"
tell table 1 of sheet 1 of document 1
set c to cell cl's column's address as number
set r to cell cl's row's address as number
set value of cell (c + co) of row (r + ro) to val
end tell
end tell
end setCellOffsetValue
Now you can use it multiple times in the same script by calling it, e.g.:
setCellOffsetValue("A1", 3, 1, "Example")
As you can see in this version, the setCellOffsetValue handler takes four parameters:
cl - The cell to offset from.
co - The column offset from the cell.
ro - The row offset from the cell).
val - The value of the offset cell.
Place the setCellOffsetValue handler within your script and call it as needed.
The handler above has table, sheet, and document hardcoded, each to 1. However, in this example you also pass that information to the handler:
on setCellOffsetValue(cl, co, ro, val, t, s, d)
tell application "Numbers"
tell table t of sheet s of document d
set c to cell cl's column's address as number
set r to cell cl's row's address as number
set value of cell (c + co) of row (r + ro) to val
end tell
end tell
end setCellOffsetValue
Now you can use it multiple times in the same script by calling it, e.g.:
setCellOffsetValue("A1", 3, 1, "Example", 1, 1, 1)
Or:
setCellOffsetValue("A1", 3, 1, "Example", "Table 1", "Sheet 1", "Untitled")
The last three parameters can be either their numeric value or name value, as appropriate for the need at that moment.
This version will be handy for documents that have multiple tables and or sheets and the need to target other then table 1 of sheet 1 of document 1.
As you can see in this version, the setCellOffsetValue handler takes seven parameters:
cl - The cell to offset from.
co - The column offset from the cell.
ro - The row offset from the cell).
val - The value of the offset cell.
t - The table number or name.
s - The sheet number or name.
d - The document number or name.
Note: The example AppleScript code is just that and does not contain any error handling as may be appropriate. The onus is upon the user to add any error handling as may be appropriate, needed or wanted. Have a look at the try statement and error statement in the AppleScript Language Guide. See also Working with Errors.
Edit: Thanks to user3439894 for pointing out the problems with my first answer - it was totally wrong, based on Excel instead of Numbers.
Here's a full script example, showing one method to achieve the objective in Numbers:
tell application "Numbers"
tell table 1 of sheet 1 of document 1
set c to cell "A1"'s column's address as number
set r to cell "A1"'s row's address as number
set value of cell (c + 3) of row (r + 1) to "Example"
end tell
end tell
You could condense the set command into one line, like this:
tell application "Numbers"
tell table 1 of sheet 1 of document 1
set value of cell ((cell "A1"'s column's address as number) + 3) of row ((cell "A1"'s row's address as number) + 1) to "Example"
end tell
end tell

Use cell text to define vlookup datatable range

In the image above, how do I replace the portion "Tom.A:C" in the vlookup function with the text in cell B2 + .A:C ?
Where "Tom" is the name of a sheet in my workbook and I want to lookup a value in the second column of that sheet.
The formula
=VLOOKUP(lookup,sheet!range,column,match)
Then, in your example, you must write it like this:
=VLOOKUP(A2, TOM ! [Range of the sheet], 2, FALSE)
Edit:
I did not understand the first time exactly what was the question, so here it is the answer:
The formula
=VLOOKUP(lookup,indirect(concat(<cell with sheetname>,<"!"|".">,"<CELL RANGE IN ALL LOOKING SHEETS>")), column, match)
Then in your example:
=VLOOKUP(A2, indirect(concat(A2,".","A:C")), 2, 0)
First you need to concatenate the value of the sheet and range that you want, then with indirect, you take that string value and use it as a valid reference.

Linq statement involving index based update of value not working

In my C# winforms project, I wanted to update a specific index based position in a collection (named List l1 here).
I tried below code:
l1.Where((s, i1) => i1 == intvalue).Select(s => { if (s > 0) s = -1; return s; };
I wanted to set value at invalue index to -1 in the list l1, but when I do so with above statement the value in l1 is not changed. Please help! I am new to Linq and have searched the topic 'index based change of value in a collection' everywhere, but can't resolve my problem as it involves BigInteger type and I have so many elements in the list that their total count passes the allowed max value for int type in c#. So when I type l1[intvalue] it says can't convert BigInteger to int for index position.
Thanks
LINQ is Language INtegrated Queries. It's purpose is querying data. If you want to modify list item:
if (l1[intvalue] > 0)
l1[intvalue] = -1;
Also I'd like to explain why your query is not changing list.
On first step you are selecting list items by some condition. Very strange condition by the way. If you want to select item by index, there is operator ElementAt.
Then you are doing projection. I.e. you are calling anonymous method which accepts each selected item and produce some result. Each item passed to that method as s argument. And when you are assigning -1 to s you are actually assigning value to method argument. That does not affect items in the list. Even if your list will contain items of reference type instead of integers, assigning value to method argument will just change where argument variable points. It will not change references in original list. Though you still can modify items of reference type. But such side-effects in projection methods are not good practice.

How to filter one list of items from another list of items?

I have a huge list of items in Column A (1,000 items) and a smaller list of items in Column B (510 items).
I want to put a formula in Column C to show only the Column A items not in Column B.
How to achieve this through a formula, preferably a FILTER formula?
Select the list in column A
Right-Click and select Name a Range...
Enter "ColumnToSearch"
Click cell C1
Enter this formula: =MATCH(B1,ColumnToSearch,0)
Drag the formula down for all items in B
If the formula fails to find a match, it will be marked "#N/A", otherwise it will be a number.
If you'd like it to be TRUE for match and FALSE for no match, use this formula instead:
=ISNUMBER(MATCH(B1,ColumnToSearch,0))
If you'd like to return the unfound value and return empty string for found values
=IF(ISNUMBER(MATCH(B1,ColumnToSearch,0)),"",B1)
Alternative method is simply =
FILTER(A1:A,if(COUNTIF(B1:B,A1:A),0,1))
It's much more efficient.
It uses countif to get a 0 or a 1 as an array if the values in B are in A, then it reverses the 0 and 1 to get the values that are missing instead of only the values that are in there. It then filters based on that.
Columns look like this
A B
1 2
2 5
3
4
5
ARE formulae:
=FILTER(A1:A, MATCH(A1:A, B1:B, 0))
=FILTER(A1:A, COUNTIF(B1:B, A1:A))
ARE NOT formulae:
=FILTER(A1:A, ISNA(MATCH(A1:A, B1:B, 0)))
=FILTER(A1:A, NOT(COUNTIF(B1:B, A1:A)))
in your case:
=FILTER(A1:A; ISNA(MATCH(A:A; B:B; )))
if you face a mismatch of ranges see: https://stackoverflow.com/a/54795616/5632629

Resources