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Why when a constructor is annotated with @JsonCreator, its arguments must be annotated with @JsonPro
...nnotations with the help of Java8 compiler flag and a Jackson module. I've tested the approach and it works.
– quantum
Sep 21 '15 at 17:46
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Finding sum of elements in Swift array
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This is the easiest/shortest method I can find.
Swift 3 and Swift 4:
let multiples = [...]
let sum = multiples.reduce(0, +)
print("Sum of Array is : ", sum)
Swift 2:
let multiples = [...]
sum = multiples.reduce(0, combine: +)
Some more info...
Is there a case insensitive jQuery :contains selector?
...y so try at your own risk if speed is an issue. (see @John 's question)
Latest edit: For jQuery 1.8 it should be:
jQuery.expr[":"].Contains = jQuery.expr.createPseudo(function(arg) {
return function( elem ) {
return jQuery(elem).text().toUpperCase().indexOf(arg.toUpperCase()) >= 0;
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Alternative for PHP_excel
...ng, or both xls and xlsx; may no longer be supported; and (while I haven't tested Ilia's extension) only COM and PUNO offers the same degree of control over the created workbook.
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grep using a character vector with multiple patterns
I am trying to use grep to test whether a vector of strings are present in an another vector or not, and to output the values that are present (the matching patterns).
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How do I view the type of a scala expression in IntelliJ
... Looks like Ctrl + Q resolves the parameterized types in the latest plugin version
– Jon Freedman
Jun 18 '12 at 16:20
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Node.js Error: Cannot find module express
...lation is only for setting up system-wide available binaries, such as unit test runners or bootstrappers or things like that.
With Express, when you install it globally, you get an express binary that can bootstrap an application for you. For more information, type
$ express --help
So, to answer...
ImportError: No module named matplotlib.pyplot
...on of matplotlib using python3 -m pip install matplotlib solved the error. Tested on Ubuntu 16.04.
– vineeshvs
Jun 5 '19 at 6:22
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How do I get only directories using Get-ChildItem?
... only directories recursively
ls -file -r #lists only files recursively
Tested on PowerShell 4.0, PowerShell 5.0 (Windows 10), PowerShell Core 6.0 (Windows 10, Mac, and Linux), and PowerShell 7.0 (Windows 10, Mac, and Linux).
Note: On PowerShell Core, symlinks are not followed when you specify t...
Replace string within file contents
...awesome, i love dogs! dog dog dogs!
Linux Command:
sed -i 's/dog/cat/g' test.txt
Output:
Hi, i am a cat and cat's are awesome, i love cats! cat cat cats!
Original Post: https://askubuntu.com/questions/20414/find-and-replace-text-within-a-file-using-commands
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