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Why there is no ConcurrentHashSet against ConcurrentHashMap
...our Set just as fine. So thanks to Mr. Stepanenkov for making that clear.
http://docs.oracle.com/javase/8/docs/api/java/util/Collections.html#synchronizedSet-java.util.Set-
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Using multiple delimiters in awk
... the text between []:
Use awk -F'[][]' but awk -F'[[]]' will not work.
http://stanlo45.blogspot.com/2020/06/awk-multiple-field-separators.html
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How can I strip first and last double quotes?
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Almost done. Quoting from http://docs.python.org/library/stdtypes.html?highlight=strip#str.strip
The chars argument is a string
specifying the set of characters to be
removed.
[...]
The chars argument is not a prefix or
suffix; rather,...
Change select box option background color
... within a , consider switching to a Javascript/CSS based drop down such as http://getbootstrap.com/2.3.2/components.html#dropdowns or https://silviomoreto.github.io/bootstrap-select/examples/. This because browsers such as IE do not allow styling of options within elements. Chrome/OSX also has thi...
How to import Google Web Font in CSS file?
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Use the @import method:
@import url('https://fonts.googleapis.com/css?family=Open+Sans&display=swap');
Obviously, "Open Sans" (Open+Sans) is the font that is imported. So replace it with yours. If the font's name has multiple words, URL-encode it by adding...
How to change line color in EditText
...ed XML drawable and styles which you can copy straight into your project.
http://android-holo-colors.com/
UPDATE 1
This domain seems expired but the project is an open source you can find here
https://github.com/jeromevdl/android-holo-colors
try it
this image put in the background of EditText
an...
How to get started with Windows 7 gadgets
...Examples in RSS, Ajax, ActiveX (COM) and Silverlight
blog related to book: http://www.innovatewithgadgets.com/
What do I need to know? Some other useful references; not necessarily instructional
Windows Sidebar (Official MSDN documentation)
related Stack Overflow question: C# tutorial to write g...
How do I remove  from the beginning of a file?
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For me, this worked:
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
If I remove this meta, the  appears again. Hope this helps someone...
shar...
How to change or add theme to Android Studio?
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You can download new themes from http://color-themes.com/
Once you have downloaded the .jar file, go to File -> Import Settings... and choose the file downloaded.
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What's the function like sum() but for multiplication? product()?
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Actually, Guido vetoed the idea: http://bugs.python.org/issue1093
But, as noted in that issue, you can make one pretty easily:
from functools import reduce # Valid in Python 2.6+, required in Python 3
import operator
reduce(operator.mul, (3, 4, 5), 1)
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