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Read file from line 2 or skip header row
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with open(fname) as f:
next(f)
for line in f:
#do something
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How do I create an empty array/matrix in NumPy?
...eating gaps for the new elements to be stored. This is very inefficient if done repeatedly to build an array.
In the case of adding rows, your best bet is to create an array that is as big as your data set will eventually be, and then add data to it row-by-row:
>>> import numpy
>>&g...
What does the function then() mean in JavaScript?
...y pass in another function to each
xhrGET call to tell it what it needs to do in case of an error. If we wanted to have just one
common error handler, that is not possible.
The Promise API was designed to solve this nesting problem and the
problem of error handling.
The Promise API proposes ...
Why do function pointer definitions work with any number of ampersands '&' or asterisks '*'?
Why do the following work?
3 Answers
3
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Dependency Inject (DI) “friendly” library
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This is actually simple to do once you understand that DI is about patterns and principles, not technology.
To design the API in a DI Container-agnostic way, follow these general principles:
Program to an interface, not an implementation
This princi...
How do you bind an Enum to a DropDownList control in ASP.NET?
...ngth - 1
Dim item As New ListItem(itemNames(i), itemValues(i))
dropdownlist.Items.Add(item)
Next
Or the same in C#
Array itemValues = System.Enum.GetValues(typeof(Response));
Array itemNames = System.Enum.GetNames(typeof(Response));
for (int i = 0; i <= itemNames.Length - 1 ; i++) {...
How do I access command line arguments in Python?
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What does [1:] mean?
– Kolob Canyon
May 1 '18 at 15:04
8
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Delete a key from a MongoDB document using Mongoose
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In early versions, you would have needed to drop down the node-mongodb-native driver. Each model has a collection object that contains all the methods that node-mongodb-native offers. So you can do the action in question by this:
User.collection.update({_id: user._id}, {$u...
List all environment variables from the command line
Is it possible to list all environment variables from a Windows' command prompt?
8 Answers
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Open two instances of a file in a single Visual Studio session
... Visual studio (BTW, I am using Visual Studio 2005). Why would I want to do so? I want to compare two sections of the same file side by side. I know workarounds such as:
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