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How to access object attribute given string corresponding to name of that attribute
...this and say i have a dataframe df1,and a variable x = 'df1' i.e. df1 as a string in var x. i want to print the shape of df like this, getattr(x, 'shape') or getattr('df1', 'shape'). I know this cannot be done with getattr, any other methods.
– ihightower
Feb 1...
Spring Data JPA find by embedded object property
...gion() did not work for me. The following works with the latest release of String Data JPA:
Page<QueuedBook> findByBookId_Region(Region region, Pageable pageable);
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node.js: read a text file into an array. (Each line an item in the array.)
...the final data into an array then wouldn't you also be able to fit it in a string and split it, as has been suggested?
In any case if you would like to process the file one line at a time you can also try something like this:
var fs = require('fs');
function readLines(input, func) {
var remainin...
Cannot create an array of LinkedLists in Java…?
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List<String>[] lst = new List[2];
lst[0] = new LinkedList<String>();
lst[1] = new LinkedList<String>();
No any warnings. NetBeans 6.9.1, jdk1.6.0_24
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Java HashMap performance optimization / alternative
...better for my particular set of data". Like, suppose you were working with strings, and you took the length of the string for the hash value. (Not how Java's String.hashCode works, but I'm just making up a simple example.) If your strings have widely varying lengths, from 1 to 10,000, and are fairly...
Get type of a generic parameter in Java with reflection
...eterTypes[i]).getActualTypeArguments();
//parameters[0] contains java.lang.String for method like "method(List<String> value)"
}
}
I'm using jdk 1.6
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orderBy multiple fields in Angular
...es the last column clicked and adds it to a growing list of clicked column string names, placing them in an array called sortArray. The built-in Angular "orderBy" filter simply reads the sortArray list and orders the columns by the order of column names stored there. So the last clicked column name ...
Format JavaScript date as yyyy-mm-dd
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Reformatting a date string should not depend on successful parsing of non-standard strings by the built-in parser. Given the OP format, it can be reformatted in less code without using a Date at all.
– RobG
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Drop all tables whose names begin with a certain string
How can I drop all tables whose names begin with a given string?
14 Answers
14
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How to check if a variable is set in Bash?
... expansion which evaluates to nothing if var is unset, and substitutes the string x otherwise.
Quotes Digression
Quotes can be omitted (so we can say ${var+x} instead of "${var+x}") because this syntax & usage guarantees this will only expand to something that does not require quotes (since it...