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Postgres DB Size Command
...g_size_pretty(pg_database_size(t1.datname)) as db_size
from pg_database t1
order by pg_database_size(t1.datname) desc;
If you intend the output to be consumed by a machine instead of a human, you can cut the pg_size_pretty() function.
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The best way to remove duplicate values from NSMutableArray in Objective-C?
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Your NSSet approach is the best if you're not worried about the order of the objects, but then again, if you're not worried about the order, then why aren't you storing them in an NSSet to begin with?
I wrote the answer below in 2009; in 2011, Apple added NSOrderedSet to iOS 5 and Mac OS...
Re-ordering columns in pandas dataframe based on column name [duplicate]
... dataframe with over 200 columns. The issue is as they were generated the order is
11 Answers
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MySQL - Using COUNT(*) in the WHERE clause
...
try this;
select gid
from `gd`
group by gid
having count(*) > 10
order by lastupdated desc
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What are attributes in .NET?
...hods/properties.
For example I might declare an Attribute called: DisplayOrder so I can easily control in what order properties should appear in the UI. I could then append it to a class and write some GUI components that extract the attributes and order the UI elements appropriately.
public clas...
How does Python's super() work with multiple inheritance?
...nable amount of detail by Guido himself in his blog post Method Resolution Order (including two earlier attempts).
In your example, Third() will call First.__init__. Python looks for each attribute in the class's parents as they are listed left to right. In this case, we are looking for __init__. S...
How to list active / open connections in Oracle?
...ogram
from v$session b, v$process a
where
b.paddr = a.addr
and type='USER'
order by spid;
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How to determine if a list of polygon points are in clockwise order?
Having a list of points, how do I find if they are in clockwise order?
23 Answers
23
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Case insensitive string as HashMap key
...ing, String> nodeMap =
new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
That's really all you need.
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What is Bit Masking?
...ing a mask to a value. This is accomplished by doing:
Bitwise ANDing in order to extract a subset of the bits in the value
Bitwise ORing in order to set a subset of the bits in the value
Bitwise XORing in order to toggle a subset of the bits in the value
Below is an example of extracting a subs...