I have a JPOS Application where the property name's are self explanatory.
getCapRecDhigh()
getCapRecDwide()
getCapJrnDwideDhigh()
getCapConcurrentRecSlp()
I am new JPOS and finding difficult to understand the terminologies.
can anyone tell me where can i get all these informations?
you can get UnifiedPOS pdf
For example CapRecDhigh from this pdf:
If true, then the receipt can print double high characters.
Related
I would like to know if there is a message I can override in Pharo so that my custom classes display more descriptive information in the inspector/debuger much like simple variable types do, like Integers or Strings. For instance:
Instead of that, I would like it to show a more custom and informative description consisting of its internal variales so as to have a tighter/tidier view of the variables instead of having to click on it and open another chart (therefore losing sight of the information on the previous chart). I know you can increase the amount of charts shown below, but that is not the point of the question. I would like to achieve something like this:
I have browsed the pharo forums and found nothing, I have also tried overriding over 30 methods hoping that one of them changed the output. Only the class message seemed to change the output, but I could only return an instance of Metaclass and besides messing with this message would break a lot of stuff. Finally I tried to reverse engineer the debugger and then the inspector to see at which point is the table constructed and what values are used or which messages are sent to build said values, but it was just too much for me, the callstack kept growing and I couldn't even scratch the surface.
Luckily, doing this in any Smalltalk is very easy. Types inherited from Object are expected to answer to the message printString, and ultimately printOn: aStream. Those messages are expected to give a description of the object. So, you should just override printOn: in your class (printString uses printOn:) and all the browsers and inspectors will automatically use it. There other possibilities in Pharo, if you want to provide more complex information in different tabs, but I think printOn: will suffice for you.
An example would be:
MyPoint>>printOn: aStream
aStream nextPut: ${.
x printOn: aStream.
aStream nextPutAll: ', '
y printOn: aStream.
aStream nextPut: $}
In Smalltalk, every time you observe something you don't like or understand, you ask the question: Which message is doing this?
In your case, the question would be: Which message creates the string a MyPoint that I see everywhere?
Next, to answer your question you need to find a good place for inserting a halt and then debug from there until you find the culprit. To do this just find the simplest expression that would reproduce the issue and debug it. In your case the right-click command in the Playground will do. So,
Write and select (MyPoint on: 14 and: -5) halt in a Playground.
Right-click and issue the Print it command (I'm assuming you already checked that this command produces the string 'a MyPoint').
Debug
Go over the evaluation of #DoIt, which answers the result
Continue this way alternating between Into and Over to make sure you follow the result to where it's being taken
Eventually you will reach the implementation of Object >> #printString. Bingo!
Now you can open a System Browser and take a look at this method, study how it's been implemented in different classes, etc. Your investigation should show you that the most basic message for printing is #printOn:. You may also want to take a look at other implementors so to better understand what people usually do. (Bear in mind that writing good #printOn:s is a minimalist art)
Overriding printOn: will work for simple cases where you want to just change description.
Pharo allows a lot more than that!
Due the extensible (moldable) nature of our inspector, you do not need to override a method to get your own visualisation of the object.
For example, look this array visualisation:
This is obtained adding this method to Collection:
gtInspectorItemsIn: composite
<gtInspectorPresentationOrder: 0>
^ composite fastList
title: 'Items';
display: [ self asOrderedCollection ];
beMultiple;
format: [ :each | GTObjectPrinter asTruncatedTextFrom: each ];
send: [ :result |
result
ifNil: [ nil ]
ifNotNil: [ result size = 1
ifTrue: [ result anyOne ]
ifFalse: [ self species withAll: result ]
]
]
if you browse for senders of gtInspectorPresentationOrder: you will see there are already a lot of special visualisations in the image.
You can take those as an example on how to create your own, adapted exactly to what you need :)
So I'm working on a crawler to get a bunch of images on a page that are saved as links. The relevant code, at the moment, is:
def parse_html(html)
html_doc = Nokogiri::HTML(html)
nodes = html_doc.xpath("//a[#href]")
nodes.inject([]) do |uris, node|
uris << node.attr('href').strip
end.uniq
end
I am current getting a bunch of links, most of which are images, but not all. I want to narrow down the links before downloading with a regex. So far, I haven't been able to come up with a Ruby-Friendly regex for the job. The best I have is:
^https?:\/\/(?:[a-z0-9\-]+\.)+[a-z]{2,6}(?:/[^\/?]+)+\.(?:jpg|gif|png)$.match(nodes)
Admittedly, I got that regex from someone else, and tried to edit it to work and I'm failing. One of the big problems I'm having is the original Regex I took had a few "#"'s in it, which I don't know if that is a character I can escape, or if Ruby is just going to stop reading at that point. Help much appreciated.
I would consider modifying your XPath to include your logic. For example, if you only wanted the a elements that contained an img you can use the following:
"//a[img][#href]"
Or even go further and extract just the URIs directly from the href values:
uris = html_doc.xpath("//a[img]/#href").map(&:value)
As some have said, you may not want to use Regex for this, but if you're determined to:
^http(s?):\/\/.*\.(jpeg|jpg|gif|png)
Is a pretty simple one that will grab anything beginning with http or https and ending with one of the file extensions listed. You should be able to figure out how to extend this one, Rubular.com is good for experimenting with these.
Regexp is a very powerful tool but - compared to simple string comparisons - they are pretty slow.
For your simple example, I would suggest using a simple condition like:
IMAGE_EXTS = %w[gif jpg png]
if IMAGE_EXTS.any? { |ext| uri.end_with?(ext) }
# ...
In the context of your question, you might want to change your method to:
IMAGE_EXTS = %w[gif jpg png]
def parse_html(html)
uris = []
Nokogiri::HTML(html).xpath("//a[#href]").each do |node|
uri = node.attr('href').strip
uris << uri if IMAGE_EXTS.any? { |ext| uri.end_with?(ext) }
end
uris.uniq
end
I have a list of the following codes and their corresponding codes in format code_128. I want to given a string, be able to generate the corresponging code in CODE_128 format. Based on this list, how could I generate a code_128 number to the string A4Y9387VY34, for example?
code code in code_128
A4Y9387VY34 ????
ADN38Y644YT7 9611019020018632869509
AXCW99QYTD34 9622019021500078083444
A9YQC44W9J3K 9611083009710754539701
AT8V7T3G3874 9622083021255845940154
A7K444N4FKB8 9622083033510467186874
AYCHFW448HTQ 9611005019246067403120
AY63CWBMTDCC 9622005028182439033426
ANY7TF46NGQ3 9622005031345848081170
AYY48TBVQ3FH 9611200003793988696055
AT8Q4CF4DQ9Q 9611200021606968867090
A764WYQFJWTT 9622200022706968919275
AC649ND7N8B6 9622148007265209832185
A4VDPTJ99YN4 9611148013412173923039
AHDYK498BD6T 9622148021309216149530
A4YYYNY7C3DJ 9611017021934363499071
AYG6XWVCCQ89 9622017031009914238743
A68YJHGQKCCM 9622017031138587166053
APMB7XG9XQC9 9611021011608391750002
AGP8C44Y8VYK 9622021021608111646113
A7C68B9T69XB 9622021021958603678086
AJYYWKR6BDGN 9611010022528724015883
AKMNVXDT9PYN 9622010027475034102229
AXPXMK9QMDFD 9622010031475028243694
I read a lot about it, but I didn't come to any solution. Thanks in advance!!
Well, this is a pretty open question, I will give you my suggestions:
If it is a finite list, you can use a Hash or a Dictionary, where
the keys are the Codes and map them to the corresponding value, in
your case, Code_128
Some scanners have software installed that allow you to change what
has been read to a new value, format it, etc.
If you need a bigger insight please, give us more detail about the environment you are using.
Hope that helps,
I decided to create a new answer because now I get your point. Well, if you are talking about a GS1-128 Code (please see www.gs1.org) please do not start without visiting Wikipedia info about it. as you can see, there is a thorough explanation about how to work with that type of code. That code is composed by several application identifiers followed by their corresponding values. There is a better way of encoding them by using special characters as parenthesis. Here is other info that may help you.
Hope it helps,
I am learning Ruby and trying to manipulate Excel data.
my goal:
To be able to extract email addresses from an excel file and place them in a text file one per line and add a comma to the end.
my ideas:
i think my answer lies in the use of spreadsheet and File.new.
What I am looking for is direction. I would like to hear any tips or rather hints to accomplish my goal. thanks
Please do not post exact code only looking for direction would like to figure it out myself...
thanks, karen
UPDATE::
So, regex seems to be able to find all matching strings and store them into an array. I´m having some trouble setting that up but should be able to figure it out....but for right now to get started I will extract only the column labeled "E Mail"..... the question I have now is:
`parse_csv = CSV.parse(read_csv, :headers => true)`
The default value for :skip_blanks is set to false.. I need to set it to true but nowhere can I find the correct syntax for doing so... I was assumming something like
`parse_csv = CSV.parse(read_csv, :headers => true :skip_blanks => true)`
But no.....
save your excel file as csv (comma separated value) and work with Ruby's libraries
besides spreadsheet (which can read and write), you can read Excel and other file types with with RemoteTable.
gem install remote_table
and
require 'remote_table'
t = RemoteTable.new('/path/to/file.xlsx', headers: :first_row)
when you write the CSV, as #aug2uag says, you can use ruby's standard library (no gem install required):
require 'csv'
puts [name, email].to_csv
Personally, I'd keep it as simple as possible and use a CSV.
Here is some pseudocode of how that would work:
read in your file line by line
extract your fields using regex, or cell count (depending on how consistent the email address location is), and insert into an arry
iterate through the array and write the values in the fashion you wish (to console, or file)
The code in the comment you had is a great start, however, puts will only write to console, not file. You will also need to figure out how you are going to know you are getting the email address.
Hope this helps.
In my application, the user must upload a text document, the contents of which are then parsed by the receiving controller action. I've gotten the document to upload successfully, but I'm having trouble reading its contents.
There are several threads on this issue. I've tried more or less everything recommended on these threads, and I'm still unable to resolve the problem.
Here is my code:
file_data = params[:file]
contents = ""
if file_data.respond_to?(:read)
contents = file_data.read
else
if file_data.respond_to?(:path)
File.open(file_data, 'r').each_line do |line|
elts = line.split
#
#
end
end
end
So here are my problems:
file_data doesn't 'respond_to?' either :read or :path. According to some other threads on the topic, if the uploaded file is less than a certain size, it's interpreted as a string and will respond to :read. Otherwise, it should respond to :path. But in my code, it responds to neither.
If I try to take out the if statements and straight away attempt File.open(file_data, 'r'), I get an error saying that the file wasn't found.
Can someone please help me find out what's wrong?
PS, I'm really sorry that this is a redundant question, but I found the other threads unhelpful.
Are you actually storing the file? Because if you are not, of course it can't be found.
First, find out what you're actually getting for file_data by adding debug output of file_data.inspect. It maybe something you don't expect, especially if form isn't set up correctly (i.e. :multipart => true).
Rails should enclose uploaded file in special object providing uniform interface, so that something as simple as this should work:
file_data.read.each_line do |line|
elts = line.split
#
#
end