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How to find the last field using 'cut'
...,baz,qux
last=${data##*,}
See BashFAQ #100 for an introduction to native string manipulation in bash.
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Loop through all the files with a specific extension
... shell options. By default, a non-matching pattern is treated as a literal string. You can set nullglob to have it treated as an empty sequence, or set failglob to have it treated as an error. (If you set both, failglob takes precedence.)
– chepner
Jul 7 '17 at...
Design Patterns: Factory vs Factory method vs Abstract Factory
...f factories like below
ComputerTypeAbstractFactory.getComputerPartFactory(String computerType) ---> This will return PartFactory which can be one of these ServerPartFactory, LaptopPartFactory, DesktopPartFactory.
Now these 3 itself are again factories. (You will be dealing with PartFactory its...
Remove carriage return in Unix
...rather than just blindly within a file (you may have them in the middle of strings for all I know). Using this test file with a CR at the end of the first line only:
$ cat infile
hello
goodbye
$ cat infile | od -c
0000000 h e l l o \r \n g o o d b y e \n
0000017
dos2un...
How can I check if a checkbox is checked?
I am building a mobile web app with jQuery Mobile and I want to check if a checkbox is checked. Here is my code.
14 Answers...
Converting Dictionary to List? [duplicate]
...
Your problem is that you have key and value in quotes making them strings, i.e. you're setting aKey to contain the string "key" and not the value of the variable key. Also, you're not clearing out the temp list, so you're adding to it each time, instead of just having two items in it.
To ...
Re-sign IPA (iPhone)
...rovisioning profile. Results in a new IPA signed with a enterprise account and a mobile provisioning profile for in house deployment (the mobile provisioning profile gets embedded to the IPA).
Solution:
Unzip the IPA
unzip Application.ipa
Remove old CodeSignature
rm -r "Payload/Application.app...
Apache Spark: map vs mapPartitions?
..."), 3)
val b = a.map(_.length)
val c = a.zip(b)
c.collect
res0: Array[(String, Int)] = Array((dog,3), (salmon,6), (salmon,6), (rat,3), (elephant,8))
mapPartitions
This is a specialized map that is called only once for each partition.
The entire content of the respective partitions is av...
How can I get the corresponding table header (th) from a table cell (td)?
...
Solution that handles colspan
I have a solution based on matching the left edge of the td to the left edge of the corresponding th. It should handle arbitrarily complex colspans.
I modified the test case to show that arbitrary colspan is ...
Popup弹出菜单扩展 · App Inventor 2 中文网
...整个屏幕，而且配置视图的选项很少。这里介绍的扩展是Android弹出菜单的包装器。几乎所有属性都是可调的。
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功能概述
Popup弹出菜单扩展是一...