making query using asyncdynamo - boto

I am using asyncdynamo library to interact with Amazon Dynamo DB. I can successfully get items using get_item() but don't know how to format a query for it. I have tried different patterns but got no luck. The Library itself doesn't have any documentation to provide the information on this.
If someone else has used and made queries using asyncdynamo then please help.

The lack of documentation for Asyncdynamo really kills the usefulness of the project. You might consider using Dynochemy instead, since at least it has some examples:
https://github.com/rhettg/Dynochemy

Related

how to write and parse an a2l file

I need some help from the community. I'm trying to write a macro in vba that allows me to generate an a2l file. I found some guides on the net but it is not enough. It's my very first approaching and I find them unclear.
I ask you if anyone can help me find a detailed guide on what are the characteristics of an a2l file and how to interpret it.
Thanks for any help.
Do you mean that A2L = ASAM 2MC? If yes,
Please check (PyA2L) - looks like some people use it even I haven't tried yet. Maybe you can do something with it.
Personally I made my own A2L parser (my own project AutoExtractGui) but I realized that it takes quite big efforts, still having some bugs/issues/... not easy. I am using C# and even C# is one of most high-level language it needs very long code for A2L parsing especially.
Even you try to make your own parser, still you need to understand the A2L's format, meaning, how to use the contents, ... this is additional task you need to study/understand/look inside deeply. Good to study, it is true, but it also needs your big efforts. ASAM standard is still being updated and tools (INCA/CANape/...) are also being updated, A2L contents are also updated time by time. If you make your own parser then you should be ready to consume efforts for those topics.
Maybe such already-existing tools/projects might help your job I guess.

Is there a API version of .getBackgrounds() such as Values.Get() vs getValues()

With some community support I recently learned how much faster Values.Get() is versus getValues(). I've been upgrading one of my projects code to use these new commands. As I go through and try to change over all of my read/write commands I've found that I use .getBackgrounds(). I haven't been able to find the equivalent API command to get the background colors. I presume it doesn't exist and that I'll need to continue to use .getBackgrounds(). Just wanted to make sure I wasn't missing anything.
Thanks!
There is Sheets.Spreadsheets.get which gives you a spreadsheet json. Backgrounds will be at
sheets[].data[].rowData[].values[].cellData.effectiveFormat.backgroundColor

Login/Registration using scala

Just wondering if when creating a login/registration web page using scala is very similar when doing with PHP/HTML which I have used in the past. I've just decided to start learning scala and am a total beginner with no clue. With PHP/HTML, I would use a form, 'POST' method and then the appropriate my_sqli prepared statement insertion and selections. Is it similar or very different in terms of overall methods and way about going with it (obviously excluding the minor differences in syntax). How and in what ways is it different or similar? thnx
Scala is totally different from PHP. Finding connections between them is really hard. I would say that Scala is better in every way but bashing PHP is just too easy nowadays.
I would suggest you to give a look at Scalatra, arguably the most mature among simple web frameworks in Scala. Every framework works differently but you can get an idea of how you think and write code in Scala giving a look at Scalatra examples.
Also, if you never worked on a JVM, it will take a while before being able to properly develop logic in your code. There are many things to learn about the environment (and obviously about the language too) before being able to develop a web app. My suggestion is to first spend some time studying the language and only then begin approaching web development. If you need a language that you can pick up and start writing code, Scala is not the right choice.

What does the _val_: do in Solr and what is it for?

I am new to Solr and I am trying to get my head around it. I can't for the life of me find any decent documentation for Solr. I've checked on the official page to see what _val_ does but it doesn't explain it well.
If someone can explain it here and give examples of how it's used that would be great!
_val_ is a hook provided by Solr for FunctionQuery. You can pass in a function to the query to manipulate the score of a document.
Ex:
_val_:"recip(rord(myfield),1,2,3)"
Refer here for the SolrQuerySyntax

JSP/.NET XML - simple client to display html

I am fairly proficient in PHP, but just starting out in ASP.Net and JSP/Java
I would like to learn JSP/ASP.NET XML to HTML transformation with some simple practical examples. Im not looking to learn how to edit XML, just displaying it, but im having trouble finding definitive examples/tutorials.
Ive spent quite a while studying JSP/ASP.NET but quickly find how vast they are and how many different ways there are to do this (quite frankly im a bit overwhelmed). I would be really grateful for advice before I embark upon this journey (and perhaps I will be saved from going in the completely wrong direction). If there are any tutorials or especially example apps you could point me towards this would really help (i like to do hands on learning)
For this I expect I need to do the following:
1) Set up a server for each technology (im using Tomcat and IIS at the moment - are these the best?)
2) Use some parameter based routing system (MVC?, but this is most surely overkill for me)
3) Parse the XML and create some variables/objects
4) Display the HTML (Use template libraries (JSTL? not sure for ASP.NET))
Any tutorials/example apps you could point me towards to help me through the above steps will be truly appreciated.
Thankyou
Ke
By the sounds of your skillset, carefully working through this developerworks tutorial on JSTL looks like a good place for you to start. It does cover the XML handling libs around part 4, and it'll also help you avoid the mistake of using scriptlets where JSTL would give cleaner, less error-prone and much more readable code.
You'll also most likely want IDE support, so that you get documentation, syntax checking and autocomplete. I personally use Eclipse (The EE download will have everything you need and more) but NetBeans might be the most straightforward to get your started.
Tomcat will be fine to get you started, but these IDEs tend to have build in web containers to save you time in deploying and testing.