All Questions
Tagged with built-in-symbols core-language
11 questions
2
votes
1
answer
132
views
Can I tell whether a symbol is build-in (part of the System` library)?
I'd like a function that checks whether a symbol is a predefined part of the language or not. More generally, it might check whether it's part of a given package.
...
- 904
10
votes
1
answer
159
views
Why does Success[...][key] work and Failure[...][key] doesn't work?
I'm trying to figure out what is a quick way to add error reporting to my user defined functions. I was experimenting with Success and ...
- 4,225
3
votes
1
answer
69
views
Is using Length more efficient than using === as stopping criterion?
I am using
NestWhileList[
f[#, elems]&,
pairs,
Length[#1]<Length[#2]&,
2, Infinity, -1
]
to generate all suitable subsets from ...
1
vote
1
answer
98
views
any possible meaning to a "terminal" slash (/)? [closed]
I've been directed to the web page
http://functions.wolfram.com/07.31.16.0001.01
The first statement in the formula is
...
- 2,385
5
votes
0
answers
64
views
Why ReadList ignores NullRecords for Number?
When thinking on this recent question the immediately obvious solution which came to my mind was to use ReadList with options ...
- 62.3k
13
votes
4
answers
3k
views
Capital Letters that are built-in symbols
I'm trying to search for an answer to "What is the complete list of single capital letters that represent built-in Mathematica commands, symbols, or uses?"
For example:
C, D, E, I, N, O
Is this ...
- 15k
8
votes
2
answers
154
views
Cannot Block Plus
It is customary to use the following idiom to partially evaluate something inside a held expression:
...
- 2,553
10
votes
0
answers
377
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 WL,...
- 1,429
5
votes
1
answer
291
views
Changing the definition of N: unexpected $RecursionLimit::reclim error
I have some objects represented as follows:
Object[data, param]
data is a list of numbers, ...
- 539
10
votes
1
answer
371
views
Defining my own invisible operator
There are some invisible operators in Mathematica (\[ImplicitPlus],\[InvisibleTimes],...
- 7,993
27
votes
4
answers
3k
views
ReadList problem related to Record type
A simple file reading issue is baffling me here. I am reading a around 200 MB textual file in .dat format. Now the file contains many lines but to phrase my problem ...
- 14.9k