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Extracting the last n characters from a string in R
... on Andrie's code)
substrRight <- function(x, n){
sapply(x, function(xx)
substr(xx, (nchar(xx)-n+1), nchar(xx))
)
}
> substrRight(c("12345","ABCDE"),2)
12345 ABCDE
"45" "DE"
Note that I have changed (nchar(x)-n) to (nchar(x)-n+1) to get n characters.
...
Understanding REST: Verbs, error codes, and authentication
...b page.
Point 3: How to return error messages and codes
Consider the 4xx or 5xx HTTP status codes as error categories. You can elaborate the error in the body.
Failed to Connect to Database: / Incorrect Database Login: In general you should use a 500 error for these types of errors. This is a ...
Increasing client_max_body_size in Nginx conf on AWS Elastic Beanstalk
...d at /var/log/cfn-init.log. In the logs you should see something like 2014-xx-xx xx:xx:xx,xxx [DEBUG] Writing content to /etc/nginx/conf.d/proxy.conf. I'm not sure, but it seemed like restarting the server might be necessary.
– h-kippo
Dec 11 '14 at 9:12
...
Post JSON using Python Requests
...ent': 'python-requests/2.4.3 CPython/3.4.0',
'X-Request-Id': 'xx-xx-xx'},
'json': {'key': 'value'},
'origin': 'x.x.x.x',
'url': 'http://httpbin.org/post'}
EDIT: This feature has been added to the official documentation. You can view it here: Requests documentation
...
IIS7 Overrides customErrors when setting Response.StatusCode?
...om Error Pages but you also want to deliver some RESTful content based on 4xx statuses then you have a problem. Setting web.config's httpErrors.existingResponse to "Auto" does not work, because .net seems to always deliver some page content to IIS, therefore using "Auto" causes all (or at least some...
MongoDB mongorestore failure: locale::facet::_S_create_c_locale name not valid
...en en_US en_US.UTF-8
sudo locale-gen it_IT it_IT.UTF-8
sudo locale-gen xx_xx xx_XX.UTF-8 ...
sudo dpkg-reconfigure locales
These commands will generate and configure the needed locales.
After those steps mongorestore got back working as usual.
...
Handle Guzzle exception and get HTTP body
I would like to handle errors from Guzzle when the server returns 4xx and 5xx status codes. I make a request like this:
5 A...
PHP: How to send HTTP response code?
...ponses with HTTP response codes (status-codes), like HTTP 200 OK, or some 4XX or 5XX code.
9 Answers
...
When is .then(success, fail) considered an antipattern for promises?
...ake an async call that does one of a few things: 1) returns successfully (2xx statuscode), 2) returns unsuccessfully (4xx or 5xx code) but not rejected per se, 3) or doesn't return at all (internet connection is down). For case #1, the success callback in the .then is hit. For case #2, the error ca...
Command-line Tool to find Java Heap Size and Memory Used (Linux)?
...
This command shows the configured heap sizes in bytes.
java -XX:+PrintFlagsFinal -version | grep HeapSize
It works on Amazon AMI on EC2 as well.
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