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deleting rows in numpy array
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The simplest way to delete rows and columns from arrays is the numpy.delete method.
Suppose I have the following array x:
x = array([[1,2,3],
[4,5,6],
[7,8,9]])
To delete the first row, do this:
x = numpy.delete(x, (0), axis=0)
To delete the thir...
push_back vs emplace_back
...o, so I asked the same question on the Visual C++ blog. Here is the answer from Stephan T Lavavej, the official maintainer of the Visual C++ standard library implementation at Microsoft.
Q: Are beta 2 emplace functions just some kind of placeholder right now?
A: As you may know, variadic te...
Remove all multiple spaces in Javascript and replace with single space [duplicate]
...ce:
str = str.replace(/ +(?= )/g,'');
Credit: The above regex was taken from Regex to replace multiple spaces with a single space
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Java Pass Method as Parameter
...'s the visitor pattern (separate the action of iterating over a collection from the function applied to each member of the collection), not the command pattern (encapsulate the arguments for a method call into an object). You are specifically not encapsulating the argument - it is provided by the it...
Sort array of objects by single key with date value
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If you want to sort based on numeric values from your keys then this ES6 one-liner might be of help. yourArr.sort((a, b) => a.yourNumericOrderingKey > b.yourNumericOrderingKey). In my case I had to sort based on an order key that was coming inside the objects of ...
How do I compare strings in Java?
...tion where you know you're dealing with interned strings, you can use ==.
From JLS 3.10.5. String Literals:
Moreover, a string literal always refers to the same instance of class String. This is because string literals - or, more generally, strings that are the values of constant expressions (...
PHP function overloading
Coming from C++ background ;)
How can I overload PHP functions?
10 Answers
10
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git - Find commit where file was added
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How does this work on files that are merged from other branches, but which weren't necessarily added to the branch being merged by the user performing the merge?
– g33kz0r
Jan 22 '14 at 18:47
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How to manually install an artifact in Maven 2?
...ed to install an artifact manually with Maven 2. I wanted to install a jar from a local directory with the command
6 Answer...
How to write loop in a Makefile?
...utputs 1 through 10 inclusive, just change the while terminating condition from 10 to 1000 for a much larger range as indicated in your comment.
Nested loops can be done thus:
target:
num1=1 ; while [[ $$num1 -le 4 ]] ; do \
num2=1 ; while [[ $$num2 -le 3 ]] ; do \
echo $$n...