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Javascript: formatting a rounded number to N decimals
... var fraction = String(absValue % power),
padding = new Array(Math.max(precision - fraction.length, 0) + 1).join('0');
result += '.' + padding + fraction;
}
return result;
}
Read the details of repeating a character using an array constructor here if you are curi...
Scatter plot and Color mapping in Python
I have a range of points x and y stored in numpy arrays.
Those represent x(t) and y(t) where t=0...T-1
3 Answers
...
Constructing pandas DataFrame from values in variables gives “ValueError: If using all scalar values
...
This worked for me. My dictionary had integer keys and ndarray values.
– StatsSorceress
Oct 22 '18 at 15:03
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A 'for' loop to iterate over an enum in Java
...
@Hiro2k You could also do Arrays.stream(Enum.values()).forEach(...) - the stream will be sequential
– RAnders00
Feb 8 '16 at 12:42
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JUnit 4 compare Sets
...
A particularly interesting case is when you compare
java.util.Arrays$ArrayList<[[name,value,type], [name1,value1,type1]]>
and
java.util.Collections$UnmodifiableCollection<[[name,value,type], [name1,value1,type1]]>
So far, the only solution I see is to change both of...
Why can't I access DateTime->date in PHP's DateTime class?
...oday but if it is a 'side effect' of var_dump() I am not so sure..
echo ((array) new DateTime())['date']; // Works in PHP 7.
What I am sure about is that if the properties of DateTime where meant to be used by us it would have been made available. But like many internal classes they are not and y...
Pandas percentage of total with groupby
...m.seed(0)
groups = [
''.join(i) for i in zip(
np.random.choice(np.array([i for i in string.ascii_lowercase]), 30000),
np.random.choice(np.array([i for i in string.ascii_lowercase]), 30000),
np.random.choice(np.array([i for i in string.ascii_lowercase]), 30000),
...
Java 8 Streams: multiple filters vs. complex condition
...op with a standard if clause is the best option. The difference on a small array 10 elements difference might ~ 2 times, for a large array the difference is not that big.
You can take a look on my GitHub project, where I did performance tests for multiple array iteration options
For small array 10...
Why is C so fast, and why aren't other languages as fast or faster? [closed]
...s to say, they made the decision to put speed above safety. C won't
Check array index bounds
Check for uninitialized variable values
Check for memory leaks
Check for null pointer dereference
When you index into an array, in Java it takes some method call in the virtual machine, bound checking and ...
How to query MongoDB with “like”?
...thod. Something like - db.collection.find().project({ name: 1, _id: 0} ).toArray(function(err, docs) { console.log(docs); callback(docs); }); Refer this - docs.mongodb.com/manual/tutorial/…
– gauravparmar
Feb 15 '18 at 11:09
...