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Why is sizeof considered an operator?
Why is sizeof considered an operator and not a function?
10 Answers
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Is there a CSS selector for elements containing certain text?
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You can match on an element, the name of an attribute in the element, and the value of a named attribute in an element. I don't see anything for matching content within an element, though.
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How to thoroughly purge and reinstall postgresql on ubuntu? [closed]
... ("clusters") using pg_dropcluster. Use that in preference to a full purge and reinstall if you just want to restart with a fresh PostgreSQL instance.
$ pg_lsclusters
Ver Cluster Port Status Owner Data directory Log file
11 main 5432 online postgres /var/lib/postgresql/11/main /...
How to export/import PuTTy sessions list?
...Path("Desktop") + "\putty.reg")
Import
Double-click on the *.reg file and accept the import.
Alternative ways:
cmd.exe, require elevated command prompt:
regedit /i putty-sessions.reg
regedit /i putty.reg
PowerShell:
reg import putty-sessions.reg
reg import putty.reg
Note: do not repla...
Groovy Shell warning “Could not open/create prefs root node …”
I tried to open the Groovy Shell ( groovysh ) on Windows 8 and got the following output:
9 Answers
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SyntaxError: Use of const in strict mode
I'm working with node.js, and in one of my js files I'm using const in "strict mode" . When trying to run it, I'm getting an error:
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Salting Your Password: Best Practices?
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Prefix or suffix is irrelevant, it's only about adding some entropy and length to the password.
You should consider those three things:
The salt has to be different for every password you store. (This is quite a common misunderstanding.)
Use a cryptographically secure random number generat...
What's the difference between an exclusive lock and a shared lock?
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I wrote this answer down because I thought this would be a fun (and fitting) analogy:
Think of a lockable object as a blackboard (lockable) in a class room containing a teacher (writer) and many students (readers).
While a teacher is writing something (exclusive lock) on the board:
No...
How to add spacing between UITableViewCell
...I have a problem when selected cell. I have set the border for contentView and whenever I selected cell the border will be smaller. How can I fix it?
– Bad_Developer
Mar 24 '17 at 11:09
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How to get CRON to call in the correct PATHs
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I used /etc/crontab. I used vi and entered in the PATHs I needed into this file and ran it as root. The normal crontab overwrites PATHs that you have set up. A good tutorial on how to do this.
The systemwide cron file looks like this:
This has the userna...