Questions on the basic structure of the Mathematica language (Wolfram language) including atomic data types, syntax etc

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6
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67 views

Why Unevaluated doesn't work on unheld side of Rule/RuleDelayed?

Unevaluated is a function that I never truly understand, and here's one of the cases confusing me: ...
6
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0answers
50 views

KeyIntersection fails (?) when an association is empty

I think I found a bug in KeyIntersection (Mma 10.2). To illustrate, input the following: ...
6
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0answers
171 views

Built-in symbols which are more close to the root/core of Wolfram Language

Seeing the vast scope of science covered by the Wolfram Language (WL) and the large amount of built-in symbols (functions), I am curious to know which built-in symbols are more close to the root of ...
5
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0answers
68 views

why does ReadString[“fname”,term] open a persistent stream, and how to close it?

Bug introduced in 10.0 and fixed in 10.3.0 Create a file temp.txt with the following content: test1 ;;; test2 ;;; test3 ;;; ...
5
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0answers
70 views

How does Plus work on machine precision Real arguments?

I thought Kahan's summation method would make a nice example for students to use to think about round-off error [W. Kahan, Pracniques: Further Remarks on Reducing Truncation Errors, Commun. ACM 8  ...
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0answers
67 views

How to get “BasicFunctions” from WolframLanguageData with implicit entity

I am trying to get a list of the functions that have property "FunctionalityAreas" -> "BasicFunctions". The following does not work: ...
3
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0answers
298 views

Minimalistic code challenge on Apollonian gaskets

I've been recently fascinated by the beauty, symmetry and mathematical richness of the Apollonian gaskets. So I felt myself challenged to see if it was possible to generate one in Mathematica with ...
3
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0answers
217 views

Mixing Wolfram Language & WolframAlpha Queries - How robust is it?

The advent of Mathematica in the cloud and linguistic input potentially transforms expectations of the Wolfram Language's programming model and its inherent robustness. An example of this comes form ...
2
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76 views

What was the thought behind the parallel versions of Table, Map, etc..?

There separately named versions of the parallel analogues of Map[] and friends: ...
2
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500 views

Lazy evaluation/loading of parts of an expression

Is it possible to have an expression x such that its elements are only evaluated when they are individually accessed, for example when evaluating statements like ...
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38 views

Flatten works in output but not in Global Workspace?

I am trying Michael Trott's Sierpinski Triangle. ...
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0answers
86 views

Function behavior based on Head

I'm figuring how to implement a function behavior based on the Head of its argument. I mean ...
1
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0answers
73 views

Type Vietnamese in Mathematica

I type Vietnamese using UTF-8 Encoding but Text Display got error. How to type Vietnamese, Chinese in Mathematica. Please help me.
0
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53 views

Weird variable report

All, What does this mean when it shows up in your notebook? ?f f Global` CreateUUID["Info-"] False False False ?x x Global` CreateUUID["Info-"] False False False What has happened? ...
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109 views

Solution of a set of quadratic congruences (Chinese remainder)

Edit: Please remove this question. I think there are mathematics error in what I am asking. You are welcome to edit the question if you can state the problem correctly. I have a set of quadratic ...