this code return an error
db[:zips].find(city: {$lt: 'd'}).limit(2).to_a.each{|r| pp r}
syntax error, unexpected '}', expecting end-of-input
However, this code works well
db[:zips].find(city: {:$lt=> 'd'}).limit(2).to_a.each{|r| pp r}
Why can not use :$lt like the first one?
You can't use the JSON-like {key: value} syntax in this case , because the key starts with $. Either use the older hash syntax or, since ruby 2.2,
{'$lt': 'd'}
I couldn't find a reference for when quoting is required (emojis are OK for example) - I suspect you would have to delve into the ruby source for this.
Related
Below is my code:
gem_package 'cucumber' do
clear_sources true
source https://chefrubyaehq.kdc.example.com/
gem_binary '/opt/chef/embedded/bin/gem'
action :install
end
And I am getting the following error:
FATAL: zng937-test/recipes/default.rb:43: unknown regexp options - chfrbyahq
FATAL: zng937-test/recipes/default.rb:44: syntax error, unexpected tSTRING_BEG, expecting keyword_do or '{' or '('
FATAL: gem_binary '/opt/chef/embedded/bin/gem'
Does anyone have any idea why I would be getting this?
You need to put the source (https://chefrubyaehq.kdc.capitalone.com/) inside quotes to make it a string. Either single or double quotes is fine for this case.
Just as the message says.
Your regex //chefrubyaehq is invalid. Ruby regex only has i, o, x, m options.
You forgot to put a period after your regex /\n gem_binary '/ before the method opt.
And when you fix those, you will still encounter more errors.
I have two computers that I mainly use to develop my Rails application. While working on Computer 1, I added some bootstrap elements to some inputs. For example:
= f.select :transport_from_state, options_for_select(state_populator, #invoice_ambulance.transport_from_state), { include_blank: true}, { class: 'chosen-select', 'data-placeholder': 'State' }
I added the 'data-placeholder': 'State' and used the 'newer' syntax instead of the old :data-placeholder' => 'State' which works fine. The page works with no errors on Computer 1.
I pulled down on computer 2, and now I am getting an error for every instance of 'data-placeholder'. Here is my error:
syntax error, unexpected ':', expecting =>
...en-select', 'data-placeholder': 'State' }
I can replace it with the old syntax and it works fine. However, I shouldn't have to switch 100 instances of this to a deprecated syntax. I have since bundle installed, bundle updated, and rebuilt the db with no luck.
Computer 1 (works)
ruby 2.2.0p0
Rails 4.2.0
Computer 2 (doesnt work)
ruby 2.2.0preview1
Rails 4.2.0
You need to upgrade Computer 2 to the real Ruby 2.2.0 rather than this beta-ish "preview" version you have. Using quoted symbols with the JavaScript-style trailing colon syntax:
{ 'some string': value }
wasn't valid before Ruby 2.2, the 2.2.0preview1 version you have on Computer 2 apparently doesn't support it.
BTW, there is no old and new syntax, there is an alternate JavaScript-style notation that can be use when the keys in a Hash-literal are some symbols. Whoever told you that the hashrocket is deprecated is, at best, confused.
The "newer" syntax is only for symbols.
{hello: 'world'} is equivalent to {:hello => 'world'} but if your key is a string then you still have to use the "hash rocket" syntax: {'hello' => 'world'}
http://ruby-doc.org/core-2.2.0/Hash.html
I want to take the .g files from Apache Hive and build a parser (targeting JavaScript) -- initially, as just a way to validate user-input Hive queries. The files I'm using come from apache-hive-1.0.0-src\ql\src\java\org\apache\hadoop\hive\ql\parse from the Hive tgz: HiveLexer.g, HiveParser.g, FromClauseParser.g, IdentifiersParser.g, SelectClauseParser.g.
I see no indication within the grammar files which version of ANTLR to use, so I've tried running antlr (from apt-get pccts), antlr3 and antlr4. they all throw errors of some sort, so I have no clue which one to run or if I can (or need to) convert the .g files between versions.
The errors I'm getting are as follows:
antlr -Dlanguage=JavaScript HiveParser.g (looks like it doesn't support JS anyway):
warning: invalid option: '-Dlanguage=JavaScript'
HiveParser.g, line 17: syntax error at "grammar" missing { QuotedTerm PassAction ! \< \> : }
HiveParser.g, line 17: syntax error at "HiveParser" missing { QuotedTerm PassAction ! \< \> : }
HiveParser.g, line 17: syntax error at ";" missing Eof
HiveParser.g, line 28: lexical error: invalid token (text was ',')
antlr3 -Dlanguage=JavaScript HiveParser.g:
error(10): internal error: Exception FromClauseParser.g:302:85: unexpected char: '-'#org.antlr.grammar.v2.ANTLRLexer.nextToken(ANTLRLexer.java:347): unexpected stream error from parsing FromClauseParser.g
error(150): grammar file FromClauseParser.g has no rules
error(100): FromClauseParser.g:0:0: syntax error: assign.types: <AST>:299:68: unexpected AST node: ->
error(100): FromClauseParser.g:0:0: syntax error: define: <AST>:299:68: unexpected AST node: ->
error(106): SelectClauseParser.g:151:18: reference to undefined rule: tableAllColumns
antlr4 -Dlanguage=JavaScript HiveParser.g:
warning(202): HiveParser.g:30:0: tokens {A; B;} syntax is now tokens {A, B} in ANTLR 4
error(50): HiveParser.g:636:34: syntax error: '->' came as a complete surprise to me while looking for rule element
error(50): HiveParser.g:636:37: syntax error: '^' came as a complete surprise to me
error(50): HiveParser.g:638:50: syntax error: '->' came as a complete surprise to me while looking for rule element
error(50): HiveParser.g:638:53: syntax error: '^' came as a complete surprise to me
The antlr3 error referencing #org.antlr.grammar.v2.ANTLRLexer.nextToken seems suspect. Is it using the v2 lexer instead of v3? If so, maybe v3 is what I should target, but it's somehow not hitting it?
Or is this not an issue with versioning and instead with invocation? Or is Hive built in a way that provides additional files needed?
According to Hive source code, they use ANTLR 3.4. But before you start remove the last string from FromClauseParser.g
//------------------------------------------------------------------------
I am trying to use getText function ,but its giving error.
assert_equal "Comment List", find(:xpath,'//div[#id='pageContainer']/div[2]/h2').getText()
and error is -
C:/Workspace/cucumber-project/features/step_definitions/comment_steps.rb:135: sy ntax error, unexpected ')', expecting kEND ...d='pageContainer']/div[2]/h2').text ^ (SyntaxError)
Can anybody help me in that, i just want to compare the text by finding through xpath with the expected text
This isn't a Cucumber issue, it's a Ruby syntax error. Your quotes are the problem, you need to do either:
"//div[#id='pageContainer']/div[2]/h2"
or
'//div[#id="pageContainer"]/div[2]/h2'
i found a ruby encryption library which is using this function.
def process(text)
0.upto(text.length-1) {|i| text[i] = text[i] ^ round}
text
end
in ruby 1.9.x it throws an error - undefined method ^' for "\x1A":String__
is there any work around in ruby 1.9.x?
after googling i came to know that "In Ruby 1.9 string[index] returns character not code of the character (like it was in 1.8)." (https://rails.lighthouseapp.com/projects/8994/tickets/3144-undefined-method-for-string-ror-234)
Thanks in advance
Try text[i].ord ^ round. See Getting an ASCII character code in Ruby using `?` (question mark) fails for more info.