matchine | sum types | Functional Programming library
kandi X-RAY | matchine Summary
kandi X-RAY | matchine Summary
Assume we have a polymorphic (i.e. sum) type, e.g. user input events:.
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QUESTION
Unable to use snd-aloop audio driver in AWS EC2 ubuntu 16.04 instance
On running modprobe on snd-aloop
...ANSWER
Answered 2018-Apr-02 at 18:53Steps to update default kernel boot item (without modification of /boot/grub/menu.lst):
Find needed menu and sub-menu item in grub.cfg:
cat /boot/grub/grub.cfg
For example you can have menu structure like this (default for AWS Ubuntu 16.04):
- (0) Ubuntu
- (1) Advanced options for Ubuntu
- (0) Ubuntu, with Linux 4.4.0-1052-aws
- (1) Ubuntu, with Linux 4.4.0-1052-aws (recovery mode)
- (2) Ubuntu, with Linux 4.4.0-116-generic
- (3) Ubuntu, with Linux 4.4.0-116-generic (recovery mode)
In this case if you need to load "Ubuntu, with Linux 4.4.0-116-generic" your default boot setting would be "1>2"
Edit default grub file:
vim /etc/default/grub
and setGRUB_DEFAULT=“1>2”
Run
update-grub
- And then
reboot now
to take this in effect - After reboot you can test it with
uname -a
which should give 4.4.0-116-generic
After this modprobe snd-aloop
should work fine.
QUESTION
I am trying to make a sorta beginners level enigma machine and I have a problem with the rotors and them not increasing after the first run through with a letter. Down below is the function with said problem
...ANSWER
Answered 2019-Jun-11 at 01:13You are passing the values of the variables to the function, not the variables themselves. These copies only exist while the function is running, and changing them does not affect the values of the original variables, even though they have the same name.
Try adding
QUESTION
Is there an equivalent in R to the SAS put
statement for the purpose of creating a new variable by matching an existing variable to a list.
Let's say I wanted to use a list of zip codes and census MSAs.
There's a list of all zips and all MSAs:
...ANSWER
Answered 2019-Mar-20 at 09:24I think you might want one of the following :
QUESTION
#!/bin/sh
export JAVA_HOME=$(dirname $(dirname $(readlink -f $(which javac))))
echo JAVA_HOME=$(dirname $(dirname $(readlink -f $(which javac))))
echo JAVA_HOME=$JAVA_HOME
${JAVA_HOME}/bin/java -jar xxxxx
...ANSWER
Answered 2017-Feb-25 at 11:19I guess you should set the JAVA_HOME variable on your OS. Have you tried?
QUESTION
I know there are a ton of posts on JSON not populating the FullCalendar.io events however, here I sit, frustrated and at my wits end. After reading through for hours(most of the afternoon actually) and following suggestions I found, along with a bit of trial and testing, I believe I have narrowed my issue down to a few possibilities.
Here is the rundown:
I have a WebAPI that uses MVC and is currently running locally as a test server (IISExpress from within Visual Studio 2017). The WebAPI gets its data from a SQL server/Stored Procedure (which is not local to my matchine) and returns the data, which I put into a list and serialize as a JSON string via the Json.Net serializer. Using both the browser and Postman, I am able to verify the data returned is a valid JSON string. When I insert the JSON string (returned from the WebAPI) manually into FullCalendar it works fine, but when I ask FullCalendar to go and retrieve the data from the WebAPI it fails.
Here is the WebAPI code:
...ANSWER
Answered 2018-Apr-16 at 20:07So I finally was able to track down what the issue was thanks to some pointers from ADyson. The issue was a Cross Origin Resource Sharing (CORS) error that I discovered while inspecting the console in chrome. Here is a screenshot of the error: CORS Error in Chrome
The WebAPI and the ASP.Net MVC that is used for implementing my FullCalendar are both on the same machine however, since they each launch a version of IIS, the port numbers were naturally different. By default the WebAPI is configured to only allow same domain/port requests as a security measure. I found two links that helped me resolve the issue. I am sharing them here, but please note in the first link (the video) the author uses * for the origin, which I would think that in any environment other than a test/dev would be unwise to use as it opens up your WebAPI to all origins and poses a potential security issue. The second link (although a bit dated) explains in more detail how to allow CORS and what each piece of the code does.
Link 1: https://www.youtube.com/watch?v=uDy_cvf4nDg#action=share
I hope this helps someone else down the road. I am just happy I was not going crazy and my code was correct, it was just a permissions issue.
Many thanks to Stephan and ADyson for your input and guidance towards the answer.
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