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Jan
19
reviewed Leave Open How to display grids in separate cells?
Jan
19
comment How to display grids in separate cells?
If my answer reflects what you are trying to do, please change the title of your question to something more meaningful. For example: How to display grids in separate cells?
Jan
19
answered How to display grids in separate cells?
Jan
19
revised Select From List of Nested Associations
Added the section on re-using queries.
Jan
19
answered Select From List of Nested Associations
Jan
18
comment Define column types in a Dataset - Failure on append and Typesystem
See Dataset with no members for ways to create an empty yet typed dataset.
Jan
18
comment Define column types in a Dataset - Failure on append and Typesystem
Could you please make this a self-contained example by defining all of the symbols used (e.g. electrodeModule02 and volumeBounds). The type system uses heuristics heavily and its behaviour is very sensitive to the exact data. Also, please mention which version you are using -- the heuristics have changed radically between 10.0.0, 10.0.1 and 10.0.2.
Jan
18
awarded  Yearling
Jan
17
revised Can Trace[] output during evaluation (and not only after)?
expanded the discussion about the `TraceScan` argument *fp*
Jan
17
revised Can Trace[] output during evaluation (and not only after)?
added the section on `TracePrint` for completeness
Jan
17
comment Can Trace[] output during evaluation (and not only after)?
Function[Null, ...] specifies that the arguments to the function are anonymous and must be referenced using slot notation (#, #2, etc). This full-form expression is necessary to specify the HoldAllComplete attribute for the pure function.
Jan
17
comment Can Trace[] output during evaluation (and not only after)?
The documentation for TraceScan refers to the two functions as f and fp. It tells us that fp takes two arguments, namely the form before and after evaluation. We are interested in the "after" value, which is the second argument (#2). The documented statement that both arguments are wrapped in HoldForm is incorrect (only the first is wrapped). In our case, a notional call to fp would look something like fp[HoldForm[sum], 1234].
Jan
17
answered Can Trace[] output during evaluation (and not only after)?
Jan
15
awarded  list-manipulation
Jan
14
answered Given the OneIdentity attribute why is GCD[a] evaluated to GCD[a]?
Jan
14
answered All binary sequences with length n
Jan
13
comment How to automatically make the maximum of each row in a table(grid) bold?
related: nicely print out a matrix in mathematica
Jan
11
revised Rearranging a Dataset
added the Edit section with another way
Jan
11
comment Transform a table (list of associations) to a flat association
+1. For the second question... if we are given ds = Dataset @ as, then we can use ds[Merge[Identity]].
Jan
9
answered GroupBy several keys while keeping the Dataset as a Table (List of Associations)