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How to get a variable value if variable name is stored as string?
...alue'
This is an example of indirect parameter expansion:
The basic form of parameter expansion is ${parameter}. The value of
parameter is substituted.
If the first character of parameter is an exclamation point (!), it
introduces a level of variable indirection. Bash uses the value ...
Get difference between 2 dates in JavaScript? [duplicate]
...conds and then divides to get the number of days. Date expects mm/dd/yyyy format.
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How to find indices of all occurrences of one string in another in JavaScript?
...)) ) {
indices.push(result.index);
}
UPDATE
I failed to spot in the original question that the search string needs to be a variable. I've written another version to deal with this case that uses indexOf, so you're back to where you started. As pointed out by Wrikken in the comments, to do thi...
How to kill a child process after a given timeout in Bash?
...do about it). As a result, I would like to be able to launch this process for a given amount of time, and kill it if it did not return successfully after a given amount of time.
...
What is the purpose of base 64 encoding and why it used in HTTP Basic Authentication?
... printable (text) characters.
See this paragraph from the wikipedia page for HTTP Basic Authentication:
While encoding the user name and password with the Base64 algorithm typically makes them unreadable by the naked eye, they are as easily decoded as they are encoded. Security is not the inten...
How do I revert a Git repository to a previous commit?
...
This depends a lot on what you mean by "revert".
Temporarily switch to a different commit
If you want to temporarily go back to it, fool around, then come back to where you are, all you have to do is check out the desired commit:
# This will detach your HEAD, that is, leave you...
Explanation of strong and weak storage in iOS5
... I have trouble understanding the difference between strong and weak storage. I have read the documentation and other SO questions, but they all sound identical to me with no further insight.
...
GIT clone repo across local file system in windows
...he Trunk from an SVN project (had some issues with branches, not got them working), but all seems ok there.
9 Answers
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ISO time (ISO 8601) in Python
...
Local to ISO 8601:
import datetime
datetime.datetime.now().isoformat()
>>> 2020-03-20T14:28:23.382748
UTC to ISO 8601:
import datetime
datetime.datetime.utcnow().isoformat()
>>> 2020-03-20T01:30:08.180856
Local to ISO 8601...
How to delete a specific line in a file?
...ile. Then reopen the file in write mode and write your lines back, except for the line you want to delete:
with open("yourfile.txt", "r") as f:
lines = f.readlines()
with open("yourfile.txt", "w") as f:
for line in lines:
if line.strip("\n") != "nickname_to_delete":
f.wr...