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GroupBy pandas DataFrame and select most common value
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@Private: ascending=False is already the default value, so there's no need to set the order explicitly.
– Schmuddi
Feb 4 '18 at 9:57
2
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Differences between “BEGIN RSA PRIVATE KEY” and “BEGIN PRIVATE KEY”
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Have a look at <openssl/pem.h>. It gives possible BEGIN markers.
Copying the content from the above link for quick reference:
#define PEM_STRING_X509_OLD "X509 CERTIFICATE"
#define PEM_STRING_X509 "CERTIFICATE"
#define PEM_STRIN...
How JavaScript closures are garbage collected
...happen.
Section 13 Function definition, step 4: "Let closure be the result of creating a new Function object as specified in 13.2"
Section 13.2 "a Lexical Environment specified by Scope" (scope = closure)
Section 10.2 Lexical Environments:
"The outer reference of a (inner) Lexical Environmen...
MySQL “Group By” and “Order By”
...osen are indeterminate."
As of 5.7.5 ONLY_FULL_GROUP_BY is enabled by default so non-aggregate columns cause query errors (ER_WRONG_FIELD_WITH_GROUP)
As @mikep points out below the solution is to use ANY_VALUE() from 5.7 and above
See
http://www.cafewebmaster.com/mysql-order-sort-group
https://dev.m...
Git pull after forced update
... and working tree. Any changes to tracked files in the working tree since <commit> are discarded.
If you want to actually keep whatever changes you've got locally - do a --soft reset instead. Which will update the commit history for the branch, but not change any files in the working directo...
Using sed, how do you print the first 'N' characters of a line?
...years and is in most linux's and bsd's (freebsd for sure), usually by default. I can't remember ever having to type apt-get install colrm.
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Why would you use String.Equals over ==? [duplicate]
...1.Equals(str2) is the same as str1 == str2 as far as what you get as a result. I do believe they use different methods for determining the equality as Jon Skeets quote that Blaenk brings up would indicate, but they give the same values.
– Matthew Scharley
Nov 2...
What is the difference between a 'closure' and a 'lambda'?
..., as you notice, has nothing to do with lambdas - they are two different (although related) concepts.
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How does the “final” keyword in Java work? (I can still modify an object.)
...n-1
}
public void setFoo(List foo) {
//this.foo = foo; Results in compile time error.
}
}
In the above case, we have defined a constructor for 'Test' and gave it a 'setFoo' method.
About constructor: Constructor can be invoked only one time per object creation by using the n...
Why is whitespace sometimes needed around metacharacters?
...hese characters are called metacharacters and they are |, &, ;, (, ), <, >, space and tab. On the other hand, curly braces ({ and }) are just ordinary characters that make up words.
Omitting the second space before } will do, since & is a metacharacter. Therefore, your tattoo should h...