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psql: FATAL: database “” does not exist
...some trouble when installing on my macbook. I've installed the application and I ran:
21 Answers
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What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be
It seems that many projects slowly come upon a need to do matrix math, and fall into the trap of first building some vector classes and slowly adding in functionality until they get caught building a half-assed custom linear algebra library, and depending on it.
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Why do you need to invoke an anonymous function on the same line?
I was reading some posts about closures and saw this everywhere, but there is no clear explanation how it works - everytime I was just told to use it...:
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Remote origin already exists on 'git push' to a new repository
...se "origin" is not available. "origin" is a convention not part of the command. "origin" is the local name of the remote repository.
For example you could also write:
git remote add myorigin git@github.com:myname/oldrep.git
git remote add testtest git@github.com:myname/oldrep.git
See the manua...
How to scroll to top of page with JavaScript/jQuery?
... = 'manual';
}
// This is needed if the user scrolls down during page load and you want to make sure the page is scrolled to the top once it's fully loaded. This has Cross-browser support.
window.scrollTo(0,0);
history.scrollRestoration Browser support:
Chrome: supported (since 46)
Firefox: sup...
What happens to my apps after my developer account membership expires? [closed]
...ients just experienced the same thing. They forgot to renew their account, and now the app is no longer available on the app store! Hope the app is still available on the provisioning portal.
– ultravelocity
Jun 7 '11 at 1:57
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AngularJS ng-if with multiple conditions
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If I have 20 input fields and I have to enable submit button only if all fields are filled. In this case, I have to include so many conditions. This is little bit confusing. Is there any other feasible solution?
– Mr_Perfect
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Python datetime to string without microsecond component
...format a datetime object in a specific format that is different from the standard format, it's best to explicitly specify that format:
>>> datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
'2011-11-03 18:21:26'
See the documentation of datetime.strftime() for an explanation of the % ...
How do you convert a time.struct_time object into a datetime object?
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@richvdh: C standard specifies that mktime() should take tm_isdst into account and Python time.mktime() calls C mktime() function on CPython. mktime() may choose the wrong local time when it is ambiguous (e.g., during end-of-DST ("fall ba...
Java Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable
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This command helped me to solve the problem:
export DISPLAY=:0
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