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Generate a random letter in Python
Is there a way to generate random letters in Python (like random.randint but for letters)? The range functionality of random.randint would be nice but having a generator that just outputs a random letter would be better than nothing.
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Postgresql - unable to drop database because of some auto connections to DB
...revent future connections:
REVOKE CONNECT ON DATABASE thedb FROM public;
(and possibly other users/roles; see \l+ in psql)
You can then terminate all connections to this db except your own:
SELECT pid, pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE datname = current_database() AND pid <...
How to check for changes on remote (origin) Git repository?
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"git fetch origin" and "git show-branch *master" were useful to me.
– Léa Massiot
May 16 '17 at 17:31
add a comment
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Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
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Culprit: False Data Dependency (and the compiler isn't even aware of it)
On Sandy/Ivy Bridge and Haswell processors, the instruction:
popcnt src, dest
appears to have a false dependency on the destination register dest. Even though the instruction only...
Getting Python error “from: can't read /var/mail/Bio”
...xecute it as python script.py, otherwise the default shell will execute it and it will bail out at the from keyword. (Incidentally, from is the name of a command line utility which prints names of those who have sent mail to the given username, so that's why it tries to access the mailboxes).
Anoth...
Missing styles. Is the correct theme chosen for this layout?
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For Android Studio (or IntelliJ IDEA),
If everything looks OK in your project and you're still receiving the error in your layouts, try to 'Invalidate caches & restart'.
Enjoy a coffee while Android Studio is recreating ca...
乐高机器人®组件 · App Inventor 2 中文网
... Specifies the bottom of the range used for the BelowRange, WithinRange,
and AboveRange events.
ColorChangedEventEnabled
Specifies whether the ColorChanged event should fire when the DetectColor
property is set to True and the detected color changes
Mode
The current mode of the sensor. On...
How to write a UTF-8 file with Java?
I have some current code and the problem is its creating a 1252 codepage file, i want to force it to create a UTF-8 file
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How to create a GUID/UUID using iOS
I want to be able to create a GUID/UUID on the iPhone and iPad.
8 Answers
8
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How to create ls in windows command prompt?
I want to use ls in windows command prompt and make it run the dir command.
18 Answers
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