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Does Parallel.ForEach limit the number of active threads?
...uses an appropriate number of cores, based on how many you physically have and how many are already busy. It allocates work for each core and then uses a technique called work stealing to let each thread process its own queue efficiently and only need to do any expensive cross-thread access when it ...
How to add a footer to a UITableView in Storyboard
...l be a subview of the tableview. You can then drag subviews such as labels and buttons there, adjust the height, etc.
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Inheriting class methods from modules / mixins in Ruby
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A common idiom is to use included hook and inject class methods from there.
module Foo
def self.included base
base.send :include, InstanceMethods
base.extend ClassMethods
end
module InstanceMethods
def bar1
'bar1'
end
end
module ...
How to send commands when opening a tmux session inside another tmux session?
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The send-prefix command can be used to send your prefix keystroke to (the process running in) the active pane. By default, the prefix is C-b and C-b is bound to send-prefix (so that hitting it twice sends a single C-b to the active pane). This i...
The cause of “bad magic number” error when loading a workspace and how to avoid it?
I tried to load my R workspace and received this error:
9 Answers
9
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Spring CrudRepository findByInventoryIds(List inventoryIdList) - equivalent to IN clause
...ows that IsIn is equivalent – if you prefer the verb for readability – and that JPA also supports NotIn and IsNotIn.
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How do you turn a Mongoose document into a plain object?
...a document from a mongoose find that I want to extend before JSON encoding and sending out as a response. If I try adding properties to the doc it is ignored. The properties don't appear in Object.getOwnPropertyNames(doc) making a normal extend not possible. The strange thing is that JSON.parse(J...
What's the difference between :: (double colon) and -> (arrow) in PHP?
...to access instance members).
In general, :: is used for scope resolution, and it may have either a class name, parent, self, or (in PHP 5.3) static to its left. parent refers to the scope of the superclass of the class where it's used; self refers to the scope of the class where it's used; static r...
CSS border less than 1px [duplicate]
...ay also be used to simulate the same effect, without the need to calculate and manipulate RGB values.
.container {
border-style: solid;
border-width: 1px;
margin-bottom: 10px;
}
.border-100 { border-color: rgba(0,0,255,1); }
.border-75 { border-color: rgba(0,0,255,0.75); }
.border-50 {...
Read Excel File in Python
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A somewhat late answer, but with pandas it is possible to get directly a column of an excel file:
import pandas
import xlrd
df = pandas.read_excel('sample.xls')
#print the column names
print df.columns
#get the values for a given column
values = df['Arm_id']...