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psql: FATAL: database “” does not exist
I'm using the PostgreSql app for mac ( http://postgresapp.com/ ). I've used it in the past on other machines but it's giving me some trouble when installing on my macbook. I've installed the application and I ran:
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How to install Java 8 on Mac
... cask install java
For the many use cases depending on an older version (commonly Java 8), the AdoptOpenJDK project makes it possible with an extra step.
brew tap adoptopenjdk/openjdk
brew cask install adoptopenjdk8
Existing users of Homebrew may encounter Error: Cask adoptopenjdk8 exists in mu...
Python: most idiomatic way to convert None to empty string?
...ot ''. s(0) should return '0', not ''. Likewise for an object that defines __bool__ or __nonzero__.
– Oddthinking
May 13 '17 at 3:27
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How to loop through a plain JavaScript object with the objects as members?
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796
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How to get Locale from its String representation in Java?
... locale strings (ie en-US) and does not work with ISO locale strings (ie en_US)
– Fabian
Nov 2 '18 at 20:46
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cleanest way to skip a foreach if array is empty [duplicate]
...h ((array) $items as $item) {
print $item;
}
Note: to all the people complaining about typecast, please note that the OP asked cleanest way to skip a foreach if array is empty (emphasis is mine). A value of true, false, numbers or strings is not considered empty.
In addition, this would work w...
What is the difference between C++ and Visual C++? [duplicate]
... other system for which you can find a C++ compiler.
Injteresting fact: at http://nethack.org/ you can download the C sourcecode for an almost antique game, where you have to walk through a bunch of mazes, kick some monsters around, find treasures and steal some valuable amulet and bring that amulet...
How does StartCoroutine / yield return pattern really work in Unity?
...o get the last version of the archive : web.archive.org/web/20140702051454/http://unitygems.com/…
– ForceMagic
Apr 13 '15 at 20:25
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Easy pretty printing of floats in python?
...most exactly) this command you said you made up:
import numpy as np
np.set_printoptions(precision=2)
Or even better in your case if you still want to see all decimals of really precise numbers, but get rid of trailing zeros for example, use the formatting string %g:
np.set_printoptions(formatter...
In Python, using argparse, allow only positive integers
...still need to define an actual method that decides this for you:
def check_positive(value):
ivalue = int(value)
if ivalue <= 0:
raise argparse.ArgumentTypeError("%s is an invalid positive int value" % value)
return ivalue
parser = argparse.ArgumentParser(...)
parser.add_argu...