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Check synchronously if file/directory exists in Node.js
... await fs.promises.access("somefile");
// The check succeeded
} catch (error) {
// The check failed
}
Or with a callback:
fs.access("somefile", error => {
if (!error) {
// The check succeeded
} else {
// The check failed
}
});
Historical Answers
Here ar...
How to send a PUT/DELETE request in jQuery?
...g an IIS webserver and the jquery PUT or DELETE requests are returning 404 errors, you will need to enable these verbs in IIS. I've found this to be a good resource: geekswithblogs.net/michelotti/archive/2011/05/28/…
– TimDog
Jan 12 '12 at 21:03
...
“inconsistent use of tabs and spaces in indentation”
... that was giving me the inconsistent use of tabs and spaces in indentation error and select:
view > indentation > convert indentation to spaces
which resolved the issue for me.
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Is there a recommended way to return an image using ASP.NET Web API
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Writing a list to a file with Python
...hon 2 use 'r' instead of 'rb' when reading the pickle if you get the "ValueError: insecure string pickle"
– queise
Sep 17 '18 at 15:34
1
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How to check if there exists a process with a given pid in Python?
...
Sending signal 0 to a pid will raise an OSError exception if the pid is not running, and do nothing otherwise.
import os
def check_pid(pid):
""" Check For the existence of a unix pid. """
try:
os.kill(pid, 0)
except OSError:
retu...
Ruby: How to turn a hash into HTTP parameters?
That is pretty easy with a plain hash like
13 Answers
13
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What HTTP status response code should I use if the request is missing a required parameter?
...was unable to process the contained
instructions. For example, this error condition may occur if an XML
request body contains well-formed (i.e., syntactically correct), but
semantically erroneous, XML instructions.
They state that malformed xml is an example of bad syntax (calli...
iterating over each character of a String in ruby 1.8.6 (each_char)
I am new to ruby and currently trying to operate on each character separately from a base String in ruby. I am using ruby 1.8.6 and would like to do something like:
...