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How can I check if a string is null or empty in PowerShell?
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@pencilCake Yes, that what I'm saying and the example above shows it in action. What the test won't check for is IsNullOrWhitespace().
– Keith Hill
Dec 7 '12 at 16:06
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Why does one hot encoding improve machine learning performance?
...oticed that when One Hot encoding is used on a particular data set (a matrix) and used as training data for learning algorithms, it gives significantly better results with respect to prediction accuracy, compared to using the original matrix itself as training data. How does this performance increas...
Python: access class property from string [duplicate]
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x = getattr(self, source) will work just perfectly if source names ANY attribute of self, including the other_data in your example.
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css selector to match an element without attribute x [duplicate]
I'm working on a CSS file and find the need to style text input boxes, however, I'm running into problems. I need a simple declaration that matches all these elements:
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How to split (chunk) a Ruby array into parts of X elements? [duplicate]
... Nice. I used something similar to foo.each_slice(3).each_with_index { |f, i| puts "#{f}, #{i}" } in order to work through the array in slices (or "chunks").
– user664833
Sep 14 '12 at 19:08
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Difference between parameter and argument [duplicate]
...if you will.
That being said, they are often used interchangeably, their exact use depending on different programming languages and their communities. For example, I have also heard actual parameter etc.
So here, x and y would be formal parameters:
int foo(int x, int y) {
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}
Whereas here...
How to move up a directory with Terminal in OS X
...any times as you want to back up through multiple parent directories. For example, cd ../../Applications would take you to Macintosh HD/Applications
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Remove and Replace Printed items [duplicate]
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Just use CR to go to beginning of the line.
import time
for x in range (0,5):
b = "Loading" + "." * x
print (b, end="\r")
time.sleep(1)
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Javascript. Assign array values to multiple variables? [duplicate]
this code works perfectly in Firefox resulting a=1, b=2 and c=3,
but it doesn't work in Chrome. Is it a Chrome bug or
it is not valid javascript code? (I failed to find it in javascript references)
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How to fix Terminal not loading ~/.bashrc on OS X Lion [closed]
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Terminal opens a login shell. This means, ~/.bash_profile will get executed, ~/.bashrc not.
The solution on most systems is to "require" the ~/.bashrc in the ~/.bash_profile: just put this snippet in your ~/.bash_profile:
[[ -s ~/.bashrc ]] && source ~/.bashrc
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