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MySQL Error 1093 - Can't specify target table for update in FROM clause
...eneral error classification. For a more specific answer about how to best handle the OP's exact query, please see other answers to this question
In MySQL, you can't modify the same table which you use in the SELECT part.
This behaviour is documented at:
http://dev.mysql.com/doc/refman/5.6/en/update...
Disable password authentication for SSH [closed]
...ear text passwords
#PasswordAuthentication no
Uncomment the second line, and, if needed, change yes to no.
Then run
service ssh restart
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Is there a generator version of `string.split()` in Python?
...offset parameter of the str.find() method. This avoids lots of memory use, and relying on the overhead of a regexp when it's not needed.
[edit 2016-8-2: updated this to optionally support regex separators]
def isplit(source, sep=None, regex=False):
"""
generator version of str.split()
...
Detach many subdirectories into a new, separate Git repository
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Instead of having to deal with a subshell and using ext glob (as kynan suggested), try this much simpler approach:
git filter-branch --index-filter 'git rm --cached -qr --ignore-unmatch -- . && git reset -q $GIT_COMMIT -- apps/AAA libs/XXX' --prune-empty -- ...
How to split a large text file into smaller files with equal number of lines?
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Have you looked at the split command?
$ split --help
Usage: split [OPTION] [INPUT [PREFIX]]
Output fixed-size pieces of INPUT to PREFIXaa, PREFIXab, ...; default
size is 1000 lines, and default PREFIX is `x'. With no INPUT, or when INPUT
is -, read standar...
How can I reverse a list in Python?
...cing, such as range(1,4)[::-1], reversed() is easier to read, runs faster, and uses substantially less memory. "
– Jim Oldfield
Aug 20 '16 at 15:55
5
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Callback functions in C++
In C++, when and how do you use a callback function?
10 Answers
10
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How to get the source directory of a Bash script from within the script itself?
...snippet, the result may be incorrect!
Also, watch out for $CDPATH gotchas, and stderr output side effects if the user has smartly overridden cd to redirect output to stderr instead (including escape sequences, such as when calling update_terminal_cwd >&2 on Mac). Adding >/dev/null 2>&am...
Rendering a template variable as HTML
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If you don't want the HTML to be escaped, look at the safe filter and the autoescape tag:
safe:
{{ myhtml |safe }}
autoescape:
{% autoescape off %}
{{ myhtml }}
{% endautoescape %}
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“The remote certificate is invalid according to the validation procedure.” using Gmail SMTP server
...ew MMC.
File --> Add/Remove Snap-In...
Click Add...
Choose Certificates and click Add.
Check the "Computer Account" radio button. Click Next.
Choose the client computer in the next screen. Click Finish.
Click Close.
Click OK.
NOW install the certificate into the Trusted Root Certification Author...