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How to redirect 'print' output to a file using python?
...t sys
sys.stdout=open("test.txt","w")
print ("hello")
sys.stdout.close()
Now the hello will be written to the test.txt file. Make sure to close the stdout with a close, without it the content will not be save in the file
s...
Can I use if (pointer) instead of if (pointer != NULL)?
...rived_ptr != nullptr) { ... }
(or, preferrably, auto derived_ptr = ...). Now, this is bad, because it leaves the (possibly invalid, i.e. null) derived pointer outside of the safety-guarding if block's scope. This isn't necessary, as C++ allows you to introduce boolean-convertable variables inside ...
Loop through an array of strings in Bash?
...re an array variable
declare -a arr=("element1" "element2" "element3")
## now loop through the above array
for i in "${arr[@]}"
do
echo "$i"
# or do whatever with individual element of the array
done
# You can access them using echo "${arr[0]}", "${arr[1]}" also
Also works for multi-line a...
Triggering HTML5 Form Validation
...) work just fine? Or does HTML5 require a submit button for the validation now?
– Mattisdada
Oct 29 '15 at 3:26
...
Removing an element from an Array (Java) [duplicate]
...y bad programming.
Suppose you had an array taking up, say, 100mb of ram. Now you want to iterate over it and delete 20 elements.
Give it a try...
I know you ASSUME that it's not going to be that big, or that if you were deleting that many at once you'd code it differently, but I've fixed an a...
AngularJS - Binding radio buttons to models with boolean values
...
I know the post is quite old but I got the same problem now. But when I use your solution and change the radio buttons all that were once selected are true and they don't switch back to false. Is there a solution for this? (prob...
psql: FATAL: role “postgres” does not exist
...s
launchctl load ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist
Now, it is set up, login using psql -U postgres -h localhost or use PgAdmin for GUI.
By default user postgres will not have any login password.
Check this site for more articles like this: https://medium.com/@Nithanaroy/ins...
Understanding the main method of python [duplicate]
...
If you import the module (.py) file you are creating now from another python script it will not execute the code within
if __name__ == '__main__':
...
If you run the script directly from the console, it will be executed.
Python does not use or require a main() function...
How can I split a text into sentences?
... re.sub(digits + "[.]" + digits,"\\1<prd>\\2",text) in the function. Now it does not split the line at decimals such as 5.5. Thank you for this answer.
– Ameya Kulkarni
Jul 17 '16 at 11:12
...
horizontal line and right way to code it in html, css
... <hr> is valid HTML5. It used represent a horizontal rule, but is now defined in semantic terms as a thematic break between content. Most browsers will still display it as a horizontal line unless told otherwise. Source: developer.mozilla.org/en-US/docs/Web/HTML/Element/hr
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