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When do I need to use AtomicBoolean in Java?
... multiple threads need to check and change the boolean. For example:
if (!initialized) {
initialize();
initialized = true;
}
This is not thread-safe. You can fix it by using AtomicBoolean:
if (atomicInitialized.compareAndSet(false, true)) {
initialize();
}
...
What is the difference between `sorted(list)` vs `list.sort()`?
list.sort() sorts the list and replaces the original list, whereas sorted(list) returns a sorted copy of the list, without changing the original list.
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What is the purpose of global.asax in asp.net
How can we use global.asax in asp.net? And what is that?
6 Answers
6
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How to convert a ruby hash object to JSON?
How to convert a ruby hash object to JSON? So I am trying this example below & it doesn't work?
5 Answers
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I need to pop up and trash away a “middle” commit in my master branch. How can I do it?
For example, in the following master branch, I need to trash just the commit af5c7bf16e6f04321f966b4231371b21475bc4da, which is the second due to previous rebase:
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Timeout command on Mac OS X?
...
You can use
brew install coreutils
And then whenever you need timeout, use
gtimeout
..instead. To explain why here's a snippet from the Homebrew Caveats section:
Caveats
All commands have been installed with the prefix 'g'.
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Android Spanned, SpannedString, Spannable, SpannableString and CharSequence
Android offers a variety of interfaces all related to text and strings:
Spanned , SpannedString , Spannable , SpannableString and CharSequence .
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What are the risks of running 'sudo pip'?
Occasionally I run into comments or responses that state emphatically that running pip under sudo is "wrong" or "bad", but there are cases (including the way I have a bunch of tools set up) where it is either much simpler, or even necessary to run it that way.
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How does git store files?
I just started learning git and to do so I started reading the Git Community Book , and in this book they say that SVN and CVS store the difference between files and that git stores a snapshot of all the files.
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Scala actors: receive vs react
... that I have quite a lot of Java experience, but have only recently become interested in functional languages. Recently I've started looking at Scala, which seems like a very nice language.
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