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Converting a column within pandas dataframe from int to string
...() and apply() ) do not preserve NULL values in either the nan or the None form.
import pandas as pd
import numpy as np
df = pd.DataFrame([None,'string',np.nan,42], index=[0,1,2,3], columns=['A'])
df1 = df['A'].astype(str)
df2 = df['A'].apply(str)
print df.isnull()
print df1.isnull()
print df2....
What is the difference among col-lg-*, col-md-* and col-sm-* in Bootstrap?
...table as you designed it rather than in degraded (single or wrapped column form).
Obviously this still depends on the content of the columns and that's the whole point. If the page attempts to display multiple columns of large data, side by side on a small screen then the columns will naturally wra...
Get nth character of a string in Swift programming language
...Scalars is a collection of Unicode scalars.
Use this API when you are performing low-level manipulation
of character data.
String.characters is a collection of extended grapheme
clusters, which are an approximation of user-perceived
characters.
Note that when processing strings tha...
What is the Python equivalent of Matlab's tic and toc functions?
... than a previous time? I would think that elapsed = time.time() - t is the form that always yields a positive value.
– Scott Smith
Nov 7 '17 at 22:22
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How to iterate over array of objects in Handlebars?
... That's nice, but AZ answer is better. Using {{#each this}} is the correct form.
– emzero
Mar 27 '14 at 19:20
indeed, ...
Examples of GoF Design Patterns in Java's core libraries
...pe)
javax.xml.parsers.DocumentBuilderFactory#newInstance()
javax.xml.transform.TransformerFactory#newInstance()
javax.xml.xpath.XPathFactory#newInstance()
Builder (recognizeable by creational methods returning the instance itself)
java.lang.StringBuilder#append() (unsynchronized)
java.lang.String...
format date with moment.js
I have a string in this format:
5 Answers
5
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Why do we use arrays instead of other data structures?
...ramming, I haven't seen an instance where an array is better for storing information than another form thereof. I had indeed figured the added "features" in programming languages had improved upon this and by that replaced them. I see now that they aren't replaced but rather given new life, so to s...
What do 3 dots next to a parameter type mean in Java?
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@OlleSöderström Another reason is that the formal parameter is converted to be an array at compile-time. That means that passing in an array yields the same result. Since an array's length is not known at compile time, the restriction to pass at least one element coul...
Is there an equivalent for var_dump (PHP) in Javascript?
... of console.debug(object) before today, and it saved me a ton of time on a form I've been struggling with for three days. Withing 20 minutes, I had it fixed. Thank you!
– ShiningLight
Feb 27 '15 at 19:48
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