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How to write an inline IF statement in JavaScript?
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You don't necessarily need jQuery. JavaScript alone will do this.
var a = 2;
var b = 3;
var c = ((a < b) ? 'minor' : 'major');
The c variable will be minor if the value is true, and major if the value is false.
This is known as a Conditional (ternary) Operato...
How to create a checkbox with a clickable label?
...he contents of the LABEL element. In this case, the LABEL may only contain one control element. The label itself may be positioned before or after the associated control.
Using this method has some advantages over for:
No need to assign an id to every checkbox (great!).
No need to use the extra a...
Remove empty elements from an array in Javascript
...gs, the above function wouldn't remove elements that are an empty string.
One typical pattern that I see often used is to remove elements that are falsy, which include an empty string "", 0, NaN, null, undefined, and false.
You can pass to the filter method, the Boolean constructor function, or re...
Drop all duplicate rows across multiple columns in Python Pandas
...drop_duplicates function is great for "uniquifying" a dataframe. However, one of the keyword arguments to pass is take_last=True or take_last=False , while I would like to drop all rows which are duplicates across a subset of columns. Is this possible?
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MySQL OPTIMIZE all tables?
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You can use mysqlcheck to do this at the command line.
One database:
mysqlcheck -o <db_schema_name>
All databases:
mysqlcheck -o --all-databases
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What's the best practice for putting multiple projects in a git repository? [closed]
As some reason, I only have one repository to use.
But I have multiple projects including java projects, php scripts and Android apps projects.
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Apache Spark: map vs mapPartitions?
...artition of the source RDD into multiple elements of the result (possibly none).
And does flatMap behave like map or like mapPartitions?
Neither, flatMap works on a single element (as map) and produces multiple elements of the result (as mapPartitions).
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What is the use of a private static variable in Java?
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static is class level variable, which is common and only one copy exists for all instances of that class. The rule is applicable whether it is private or public. private just says I don't want out side world to corrupt my variable value (for non-final statics) . If a static is fina...
Is there a way to measure how sorted a list is?
...r (i,j) is called an inversion of A.
The inversion number of a sequence is one common measure of its sortedness.Formally, the inversion number is defined to be the number of inversions, that is,
To make these definitions clearer, consider the example sequence 9, 5, 7, 6. This sequence has the inve...
Reversing a linked list in Java, recursively
...e nodes called ListNode ). The catch is that everything would have to be done with recursive algorithms. I was able to do everything fine sans one method: public AddressList reverse()
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