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How to configure postgresql for the first time?
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The other answers were not completely satisfying to me. Here's what worked for postgresql-9.1 on Xubuntu 12.04.1 LTS.
Connect to the default database with user postgres:
sudo -u postgres psql template1
Set the password for user postgres, then ex...
Use of .apply() with 'new' operator. Is this possible?
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Font size in CSS - % or em?
..., was shown to provide
accurate, resizable text across all
browsers in common use today. This is
a technique you can put in your kit
bag and use as a best practice for
sizing text in CSS that satisfies both
designers and readers.
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Add UIPickerView & a Button in Action sheet - How?
... designed to be subclassed, nor should you add views to its hierarchy
I recommend against trying to customize the contents of an ActionSheet, as it can lead to serious invalid context errors in iOS 7. I just spent a few hours working through this problem and ultimately decided to take a different a...
Email validation using jQuery
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With new top level domains becoming more common this regex may need modifying .systems and .poker etc are all valid TLDs now but would fail the regex check
– Liath
Sep 5 '14 at 7:35
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What is the difference between tree depth and height?
... node having width 1, and an empty graph having width 0. mathworld.wolfram.com/GraphDiameter.html
– Daniel A.A. Pelsmaeker
Nov 26 '18 at 10:48
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Python dictionary from an object's fields
...t; a.__dict__
{'c': 2, 'b': 1}
A better approach (suggested by robert in comments) is the builtin vars function:
>>> vars(a)
{'c': 2, 'b': 1}
Alternatively, depending on what you want to do, it might be nice to inherit from dict. Then your class is already a dictionary, and if you want...
Most efficient way to concatenate strings?
...roblem with String.Join is that you have to concatenate the strings with a common delimiter.
Edit: as @ryanversaw pointed out, you can make the delimiter string.Empty.
string key = String.Join("_", new String[]
{ "Customers_Contacts", customerID, database, SessionID });
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Difference between an API and SDK
...on-developer the difference between an API an SDK. I need to explain why a commercial fingerprint software vendor will likely not provide an SDK, although they may certainly have used one.
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How to Correctly Use Lists in R?
...in widespread use have at least a handful of ADTs [abstract data types] in common, in particular,
12 Answers
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