boson | cooperative multitasking and green threads | Android library
kandi X-RAY | boson Summary
kandi X-RAY | boson Summary
The goal of the framework is to use light routines instead of threads. In Go, these are called Goroutines. In the C++ world, it is known as fibers. In the boson framework, we just call them routines.
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QUESTION
I'm new to React and having some issues of how to access a nested array inside of an object. What I want to do is render the 'name' object inside the data object exported from another file.
However, I keep getting a "undefined" error when I try to access the array nested inside the object.
When I try to just print the object I get the expected result. Equally, when I try to access the array outside the Render function it works, but for some reason I don't understand it't not working inside the render function.
My guess is that there is something about objects/arrays in React I'm not understanding.
I've also tried using .map but the result is the same.
Any clue as to what I'm not understanding?
Code looks like this:
...ANSWER
Answered 2021-May-12 at 09:24The first time your component renders, this.state.housingData
is an empty object so this.state.housingData[0]
is indeed undefined
.
If I change [...] To [...] The object get printed like this [...]
You are seeing the output of the second render of the component. That "works" because the code change doesn't cause an error anymore in the first render of the component.
Here is a simplified example of your problem:
QUESTION
In the code here: https://www.kaggle.com/ryanholbrook/detecting-the-higgs-boson-with-tpus
Before the model is compiled, the model is made using this code:
...ANSWER
Answered 2020-Dec-18 at 23:15Distribution strategies were introduced as part of TF2 to help distribute training across multiple GPUs, multiple machines or TPUs with minimal code changes. I'd recommend this guide to distributed training for starters.
Specifically creating a model under the TPUStrategy
will place the model in a replicated (same weights on each of the cores) manner on the TPU and will keep the replica weights in sync by adding appropriate collective communications (all reducing the gradients). For more information check the API doc on TPUStrategy as well as this intro to TPUs in TF2 colab notebook.
QUESTION
I was trying to see if I can detect Higgs Boson using transfer learning and I am unable to understand the error message. I was wondering if it has something to do with the fact that the mentioned model was designed for computer vision so it'll work only for that (which I don't think is the case, but any inputs are appreciated) Heres the code and error message
...ANSWER
Answered 2020-Nov-15 at 06:24As per the official documentation of Land Marks Classifier,
Inputs are expected to be 3-channel RGB color images of size 321 x 321, scaled to [0, 1].
But from Your Dataset, file format is tfrecord
.
When we use Transfer Learning
and when we want to reuse the Models
either from TF Hub
or from tf.keras.applications
, our data should be in the predefined-format as mentioned in the documentation.
So, please ensure that your Dataset
comprises of Images
and resize Image Array
to (321,321,3)
for the TF Hub Module to work.
QUESTION
I've got a Jekyll private blog (i.e., laboratory notebook) that uses the wonderful minimal-mistakes theme. I make heavy use of tags for each of my blog posts and can see the list of tags.
I also like to keep track of the people I mention in my blog post, so I add additional meta data for each post like this:
...ANSWER
Answered 2020-Oct-23 at 06:57I think you need to replace site
with page
in your second code snippet, see the handling for variables.
- site: global website (e.g. _config.yml)
- page: current page
Additional I dropped the array index [0]
.
QUESTION
I am new to flask and I have set up a simple flask example and two tests using pytest(see here). When I let run only one test it works, but if I run both tests it does not work.
Anyone knows why? I think I am missing here some basics of how flask works.
code structure:
app/__init__.py
ANSWER
Answered 2020-Sep-29 at 20:39The problem is with your registration of the routes in app/views.py
when you register them with current_app as app
. I'm not sure how you would apply the application factory pattern without using blueprints as the pattern description in the documentation implies they are mandatory for the pattern:
If you are already using packages and blueprints for your application [...]
So I adjusted your code to use a blueprint instead:
app/main/__init__.py
:
QUESTION
I need to check if the column value from the first csv file, exists in any of the three other csv files and return a value into a new csv file, in order of precedence.
So if the username field from allStaff.csv exists in the list of usernames in the sessionVPNct.csv file, put the static text into the final csv file as 'VPN'. If it does not exist, check the next csv file: sessionCRXct.csv then put the static text 'CRX', if not check the last csv file: sessionTMSct.csv then put the static text: TM if not the put the static text 'none' into the final csv file.
I have four csv files as below:
ANSWER
Answered 2020-Apr-19 at 07:57here is one way to do the job. [grin] it presumes that you only want to 1st connection type found. if you want all of them [for instance, JBloggs has all 3 types listed], you will need to concatenate them.
what it does ...
- fakes reading in the CSV files
when ready to use real data, comment out or remove the entire#region/#endregion
section and useGet-Content
. - iterates thru the main collection
- uses a switch to test for membership in each connection type list
this breaks out of the switch when it finds a match since it presumes you only want the 1st match. if you want all of them, then you will need to accumulate them instead of breaking out of the switch block. - sets the
$ConnectionType
as appropriate - builds a PSCO with all the wanted props
this likely could be shortened by usingSelect-Object
, a wildcard property selector, and a calculated property. - sends it out to the
$Results
collection - shows it on screen
- saves it to a CSV file
the code ...
QUESTION
I am trying to plot the invariant mass of the Z boson from two decayed muons. I am using MadGraph and Root. MadGraph simulates the events (p p > Z > mu+ and mu-) and creates a .root file that contains the events. I called the simulation eventgeneration.
To use Root to analyze the data and draw the histogram, I have to write my code in C++. Here is the code:
...ANSWER
Answered 2020-Jan-27 at 09:03By calling new TTree(&chain)
you're trying to call a constructor for a TTree
and you provide it with a TChain *
(the type of chain
is TChain
, so &chain
is a pointer to a TChain
).
The constructors for TTree
https://root.cern/doc/v618/classTTree.html take either no argument or two const char*
(usually string literals or .Data()
of a TString
or .c_str()
of a std::string
or the output of ROOT's Form
…).
It looks like you try to call the deleted constructor TTree(const TTree&tt)=delete
, which doesn't work for several reasons:
- you're providing a pointer to a
TTree
instead of aTTree
by reference (not even sure from the top of my head if casting fromTChain
toTTree
would work if the&
wasn't there. - the constructor is deleted, so it doesn't actually exist and cannot be called.
However, from the looks of it, you want to use your TChain
as a TTree*
, which doesn't require any code from your side to begin with because a TChain
already is a TTree
by inheritance. So, you can use chain.
instead of tree->
, or (if having a pointer variable is really more desirable for reasons that I don't see in the example) create a TTree*
(i.e. create only the pointer to a TTree
, instead of creating the actual TTree
on the heap and get a pointer to it from the new
operator) by doing something like
QUESTION
I am trying to match this address but it seems to be quite the adventure. This is the correct solution at the moment \d{1,9},\d{1,2}([\s\w\.]+?)Please find
.
The problem is that I want to include commas in my regex pattern because sometimes the address will have a comma in. When I do this \d{1,9},\d{1,2}([\s\w\.\,]+?)Please find
it matches all the numbers above the address which I don't want to include.
How can I avoid this? (I am thinking that we can exclude numbers with a particular pattern as the address would ever contain 12.97 or 15.97 etc..).
This is what I want to search for:
...ANSWER
Answered 2019-Dec-04 at 10:03One option to get the data is to use a negative lookahead (if supported) to match the digit format at the start and repeat matching all the lines that do not start with either that same digit format or Please find
Then you can either match the whole line using .*
(which will also match an empty line) or use a character class to specify what you would allow to match.
QUESTION
I am trying to load a Higgs Boson dataset from uproot. I am not comfortable with the use of uproot and the .root data type. I am using the following code which is a sort of official instructions to load the library. I have made a virtual environment and installed the necessary libraries
...ANSWER
Answered 2018-Mar-08 at 06:33Python 2 and 3 differ in their treatment of byte strings versus unicode strings: Python 2 implicitly converts (weakly, dynamically typed), but Python 3 complains (strongly, dynamically typed).
Names that come from ROOT files are byte strings because ROOT provides no encodings. They're all just "char *". The appropriate Python type is byte string.
OAMap just doesn't want to deal with this— array names are strings, meaning anything in unicode. In Python 2, an encoding is implicitly assigned to make this true; Python 3 is stricter about how the encoding is assigned. Its connector to ROOT might be missing cases to handle unencoded byte strings.
Switch to Python 2 for an easy fix.
QUESTION
In python3 I download an xml file from the web https://cds.cern.ch/record/1642553?&of=xm&ot=245 I then try to save it.
If I open the URL on the browser I get (between the lines): W± boson in pp collisions at √s = 7 TeV
If I open the file on my pc it shows: W± boson in pp collisions at âs = 7 TeV
the b'string outputs: W\xc3\x82\xc2\xb1 boson in pp collisions at \xc3\xa2\xc2\x88\xc2\x9as = 7 TeV
...ANSWER
Answered 2019-Aug-13 at 23:20It seems server sends information that it will send data encoded ISO-8859-1
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