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How do I expand the output display to see more columns of a pandas DataFrame?
...o a console.
The default is 1,000,000 rows. So, if a DataFrame has more
1,000,000 rows there will be no null check performed on the
columns and thus the representation will take much less time to
display in an interactive session. A value of None means always
...
Best way to combine two or more byte arrays in C#
...;> method. It's only slightly slower than the C# yield operator, but is more concise and more elegant.
IEnumerable<byte> rv = a1.Concat(a2).Concat(a3);
If you have an arbitrary number of arrays and are using .NET 3.5, you can make the System.Buffer.BlockCopy solution more generic like th...
Pros and cons of Java rules engines [closed]
...in console in the hands of non-technical people is a good thing or not :)
More details in Should I use a Rules Engine?, Why use a Rule Engine?, Some Guidelines For Deciding Whether To Use A Rules Engine and on Google.
Are there any other players?
Other players include JRules, Corticon (JRules...
Why is Hibernate Open Session in View considered a bad practice?
... that your collections or entities are lazily initialised ( perhaps N+1 ). More convenience, less control.
Update: see The OpenSessionInView antipattern for a larger discussion regarding this subject. The author lists three important points:
each lazy initialization will get you a query me...
Should I use SVN or Git? [closed]
...ithout having to push things to an external server.
SVN is designed to be more central where Git is based on each user having their own Git repo and those repos push changes back up into a central one. For that reason, Git gives individuals better local version control.
Meanwhile you have the cho...
Add more than one parameter in Twig path
How to add more than one parameter in Twig path?
Say you have this route :
2 Answers
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What is the difference between '@' and '=' in directive scope in AngularJS?
...
@JonathanAquino, yes that works, but @ would be more appropriate -- with foo="{{1+1}}" -- because we don't need two-way data binding here. The point I tried to make in the comment above is that we should use = only when the directive needs two-way data binding. Use @ or ...
SQL select only rows with max value on a column [duplicate]
...our point, this is why I called it group_identifier, which could be one or more columns. In your case, group_identifier is the combination of name and age
– Adriano Carneiro
Dec 12 '12 at 16:50
...
Regex for numbers only
...ors.
Regex regex = new Regex(@"^\d$");
Use "^\d+$" if you need to match more than one digit.
Note that "\d" will match [0-9] and other digit characters like the Eastern Arabic numerals ٠١٢٣٤٥٦٧٨٩. Use "^[0-9]+$" to restrict matches to just the Arabic numerals 0 - 9.
If you need t...
Running shell command and capturing the output
... works on almost all versions of Python still in wide use (2.7+).2 But for more recent versions, it is no longer the recommended approach.
Modern versions of Python (3.5 or higher): run
If you're using Python 3.5 or higher, and do not need backwards compatibility, the new run function is recommend...