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Apr
23
awarded  Popular Question
Apr
22
comment How often does Mathematica contact its license server?
Thanks, I'll wait for it! :)
Apr
22
reviewed Approve Matrix echelon/upper diagonal form
Apr
22
reviewed Leave Open Cannot save file
Apr
22
reviewed Approve Why the difference?
Apr
22
reviewed Approve Can I force a function to quit and return some value after a certain amount of time has passed during its evaluation?
Apr
21
comment How do I define the domain of a function?
f[x_?Positive, y_?Positive] := ...
Apr
21
reviewed Approve Why is FindInstance failing when I relax a set of constraints?
Apr
21
comment What is the best way to save a large graph object, allowing it to be reloaded quickly in a new kernel?
@Szabolcs Interesting... I did not know that about Export/Import and .mx files. I typically use DumpSave and Get with a dedicated internal variable and a wrapper function in my packages i.e. something like save[file_, var_] := Block[{$var}, DumpSave[file, $var = var];] and load[file_] := Block[{$var} = Get@file]. Oh well... I'll probably keep them the way they are, since it works.
Apr
20
answered How to sum over a List
Apr
20
comment How often does Mathematica contact its license server?
Is there any way to force the front end to accept a revalidated license? I work on the bus ride back home (till the kernel bails out on me) and continue at home once I have internet access (which validates the license). I've found that once the front end decides to switch into the free CDF mode, there is no making it go back. Any open notebooks continue to be notebooks (with the kernel working), but new ones are launched as CDFs. This is extremely annoying, because I have to then close all my other notebooks and reopen them just so I can get 1 more new notebook...
Apr
19
revised FeynCalc “May shadow or be shadowed by other definitions”
added 6 characters in body; edited tags
Apr
19
comment FeynCalc “May shadow or be shadowed by other definitions”
Possible duplicate of: How to load a package without naming conflicts and Why are some function names red?
Apr
19
revised ReplacePart inside For loop
added 144 characters in body
Apr
19
answered ReplacePart inside For loop
Apr
19
comment ReplacePart inside For loop
Ivan, Mathematica questions should be asked on this site. Meta (where you originally asked this) is only for questions and discussions about this site.
Apr
19
revised ReplacePart inside For loop
added 6 characters in body; edited tags
Apr
19
revised Can we give Mathematica hints for symbolic sums and products?
edited body
Apr
19
comment How to check if a 2D point is in a polygon?
@BoLe Unfortunately, it doesn't look like the code for this one is accessible... In general, the tighter a function's integration with the kernel, the harder it is (almost impossible) to read its definitions (e.g. Pick, Cases, etc.). You can, however, read them for several other functions that are implemented in top level Mathematica. Usually all that one needs to do is to clear the attributes, read the definitions and follow the rabbit hole of internal definitions. However, instead of that, I'll recommend this answer. Prepare to be amazed :)
Apr
19
comment How to detect crosses and circles in 60x60 raster images?
@Sjo Most dictionaries (and I mean ones used in, say, Word or browsers and not OED) also have a list of common names from top X countries. I'm sure Dutch names (at least, the more common ones) are in that list. For instance, Chrome does not highlight any word in "Sjoerd de Vries" as a typo when I type it in a box, nor does it for "Heike", "Jeroen", "Johann", etc., but it does highlight "Arnoud" (less common?). Arnoud also mentioned that it uses other heuristics, so perhaps there's more to it such as using a database of common letter combinations for local match and a dictionary for global...