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PG::ConnectionBad - could not connect to server: Connection refused
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It could be as simple as a stale PID file. It could be failing silently because your computer didn't complete the shutdown process completely which means postgres didn't delete the PID (process id) file.
The PID file is used by postgres to make sure only on...
How to think in data stores instead of databases?
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The datastore makes no distinction between inserts and updates. When you call put() on an entity, that entity gets stored to the datastore with its unique key, and anything that has that key gets overwritten. Basically, each entity kind in the datastore acts like an enormous map or sorted list.
Qu...
Are email addresses case sensitive?
...uish different addresses based on case". We use MS Exchange which I would call "widely used".
– Matthew James Briggs
Nov 24 '15 at 20:14
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Struct like objects in Java
... be explicitly set or gotten-often that happens as a side effect of method calls.
One example of appropriate public instance variables is the case where the class is essentially a data structure, with no behavior. In other words, if you would have used a struct instead of a class (if Java supported...
Eclipse Autocomplete (percent sign, in Juno)
...value might change from 13% to 95% between some lines, depending what you did in between.
See the docs for details:
It assists developers by recommending him only those methods that are actually relevant for his task at hand. For instance, given that a developer just created a text widget makes...
XPath - Selecting elements that equal a value
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jQuery get mouse position within an element
I was hoping to craft a control where a user could click inside a div, then drag the mouse, then let up on the mouse in order to indicate how long they want something to be. (This is for a calendar control, so the user will be indicating the length, in time, of a certain event)
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What's a quick way to test to see a file exists?
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setting multiple column using one update
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XPath: How to check if an attribute exists?
... edited Nov 6 '13 at 17:33
ulidtko
11.5k77 gold badges4343 silver badges8181 bronze badges
answered Sep 17 '10 at 18:26
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