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Bison grammar (1 reduce/reduce 1 shift/reduce )
Category : Programming Languages

Updated ...
i know, my grammar is ambiguous but how can I rewrite this grammar to eliminate this ambiguity? ..................


I have a grammar just like this:


Bison file


%left equal nEqual
%left gre less greOrEqual lessOrEqual
%left plus sub
%left DIV mult exp mod
%left not
%left leftB rightB
%%
S :
var "=" A "

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scale and reduce colors to reduce file size of scan
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I need to reduce the file size of a color scan.


Up to now I think the following steps should be made:


selective blur (or similar) to reduce noise
scale to ~120dpi
reduce colors

Up to now we use convert (imagemagick) and net-ppm tools.


The scans are invoices, not photos.


Any hints appreciated.


Update


example:


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Here is a simplified version of my grammar that is compilable by bnfc. I use the happy parser generator and that's


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The Internal Revenue Service must follow certain tax laws when laying claim to different types of income. People can reduce their tax liability by converting taxable income into non-taxable income. Tax exemptions exist as non-taxable income sources that reduce a person's overall taxable income. Other areas to look at for income reductions include opting for employer benefits versus employer compen

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map reduce taking very long time to reduce 26 records
Category : Databases

Here's what I'm doing:


mongos> db.campaign_raw_data_459_imp.count()
21800002
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26
mongos> map = function () { emit(this.cookie, 1);}
function () {
emit(this.cookie, 1);
}
mongos> reduce = function (key, values) {return 1;}
function (key, values) {
r

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Category : Programming Languages

I'm attempting to use Beaver to parse a grammar that contains a reduce/reduce conflict. The conflict is expected. Other parser generators support saying something like %expect 0 1 to specify that one reduce/reduce conflict is expected, but Beaver doesn't appear to support this. How can I tell Beaver to ignore a known reduce/reduce conflict and generate a parser?


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I am experiencing a really weird case when I am doing some performance tuning of hadoop. I was running a job with large intermediate output (like InvertedIndex or WordCount without combiner), the network and computation resources are all homogeneous. According to how mapreduce work, when there is more WAVES of reduce task, the overall run time should be slower as there is less overlap between m


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EBNF to Bison - Reduce/Reduce error
Category : Web Design

i have to translate this EBNF to bison:


<compound-statement> ::= begin [ <statement> ( ; <statement> )*] end
<statement> ::=
| <assignment>
| <if-statement>
| <while-statement>
| <proc-func-call>
| <compound-statement>

when i translate assignement, if,while statements and pro


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The map/reduce engine may invoke reduce functions iteratively; thus,
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This is how I always understood reduce to work in a general map reduce environment.
Here you could sum values across N machines by reducing the values on each machine, then sending those outputs to another


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