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How to create your own library for Android development to be used in every program you write?
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jorgejorge
10911 silver badge33 bronze badges
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Who is listening on a given TCP port on Mac OS X?
...grep $PORT - I made an alias with this command
– alyn000r
Aug 1 '16 at 20:55
I would suggest adding "| grep $PORT" or...
Sql query to insert datetime in SQL Server
...eed work in all SQL languages in sys.syslanguages:
declare @sql nvarchar(4000)
declare @LangID smallint
declare @Alias sysname
declare @MaxLangID smallint
select @MaxLangID = max(langid) from sys.syslanguages
set @LangID = 0
while @LangID <= @MaxLangID
begin
select @Alias = alias
fr...
Sort hash by key, return hash in Ruby
...of tuples to convert them to a k=>v structure (hash).
hsh ={"a" => 1000, "b" => 10, "c" => 200000}
Hash[hsh.sort_by{|k,v| v}] #or hsh.sort_by{|k,v| v}.to_h
There is a similar question in "How to sort a Ruby Hash by number value?".
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How to find out the number of CPUs using python
...y use os.cpu_count()
– Achilles
Sep 11 '17 at 19:59
5
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Why is processing a sorted array slower than an unsorted array?
I have a list of 500000 randomly generated Tuple<long,long,string> objects on which I am performing a simple "between" search:
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Modifying a subset of rows in a pandas dataframe
..., use NumPy's where function.
Setup
Create a two-column DataFrame with 100,000 rows with some zeros.
df = pd.DataFrame(np.random.randint(0,3, (100000,2)), columns=list('ab'))
Fast solution with numpy.where
df['b'] = np.where(df.a.values == 0, np.nan, df.b.values)
Timings
%timeit df['b'] = np.where...
How to revert a Git Submodule pointer to the commit stored in the containing repository?
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answered Oct 24 '11 at 23:28
Brian RiehmanBrian Riehman
21.6k22 gold badges2020 silver badges1717 bronze badges
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JAXB creating context and marshallers cost
...matter of a very large number of xml files (we're talking here of about 10,000 xml requests per minute); in that case creating the context just once gaining those little ms makes a huge difference
– tbarderas
Sep 14 '15 at 14:55
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WebSockets vs. Server-Sent events/EventSource
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answered Mar 16 '11 at 13:40
Alex RecareyAlex Recarey
15.8k44 gold badges2020 silver badges2222 bronze badges
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