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PSQLException: current transaction is aborted, commands ignored until end of transaction block
...that failure and ignored it. But that wasn't enough, THEN you used that same connection, using the SAME TRANSACTION to run another query. The exception gets thrown on the second, correctly formed query because you are using a broken transaction to do additional work. PostgreSQL by default stops y...
How to take screenshot of a div with JavaScript?
I am building something called the "HTML Quiz". It's completely ran on JavaScript and it's pretty cool.
10 Answers
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How to use onSavedInstanceState example please
I'm confused when it comes down to saving a state. So I know that onSaveInstanceState(Bundle) is called when the activity is about to be destroyed. But how do you store your information in it and bring it back to its original state in onCreate(Bundle savedInstanceState) ? I don't understand how t...
Confusion between numpy, scipy, matplotlib and pylab
...atplotlib (in matplotlib.pylab) and tries to give you a MatLab like environment. matplotlib has a number of dependencies, among them numpy which it imports under the common alias np. scipy is not a dependency of matplotlib.
If you run ipython --pylab an automatic import will put all symbols from mat...
Why doesn't Java support unsigned ints?
...m an interview with Gosling and others, about simplicity:
Gosling: For me as a language designer, which I don't really count myself as these days, what "simple" really ended up meaning was could I expect J. Random Developer to hold the spec in his head. That definition says that, for instance, J...
css - position div to bottom of containing div
...rches for the nearest relative parent. By default it's the body of the document. So if no parent DOM object (.outside) has the property of being relative your .inside will go to to the bottom of the body tag.
– user1467267
Mar 12 '13 at 10:29
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Use HTML5 to resize an image before upload
...en questions on stackoverflow answering this question. I am basically implementing this same thing as this post .
3 Answer...
In a Django form, how do I make a field readonly (or disabled) so that it cannot be edited?
...jango 1.9 added the Field.disabled attribute:
The disabled boolean argument, when set to True, disables a form field using the disabled HTML attribute so that it won’t be editable by users. Even if a user tampers with the field’s value submitted to the server, it will be ignored in favor of ...
How to escape single quotes within single quoted strings
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If you really want to use single quotes in the outermost layer, remember that you can glue both kinds of quotation. Example:
alias rxvt='urxvt -fg '"'"'#111111'"'"' -bg '"'"'#111111'"'"
# ^^^^^ ^^^^^ ^^^^^ ^^^^
# 12345 12345 ...
How can I check if a var is a string in JavaScript?
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this worked for me if(typeof(str) === typeof(String()))
– Scott Murphy
Feb 23 '17 at 21:25
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