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How to count the number of occurrences of an element in a List
... It was introduced in JDK 5 (although no one uses a version before that so it doesn't matter) docs.oracle.com/javase/8/docs/technotes/guides/collections/…
– Minion Jim
Mar 2 '19 at 15:49
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Why does “git difftool” not open the tool directly?
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man git-difftool
OPTIONS
-y, --no-prompt
Do not prompt before launching a diff tool.
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Python != operation vs “is not”
...s whether the right hand side and the left hand side are equal objects (according to their __eq__ or __cmp__ methods.)
is is an identity test. It checks whether the right hand side and the left hand side are the very same object. No methodcalls are done, objects can't influence the is operation.
Y...
How do you write a migration to rename an ActiveRecord model and its table in Rails?
I'm terrible at naming and realize that there are a better set of names for my models in my Rails app. Is there any way to use a migration to rename a model and its corresponding table?
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Safe characters for friendly url [closed]
...a website that will have articles, and I would like to make friendly URLs for it, example the URL of the page with
13 Answ...
How Do I Choose Between a Hash Table and a Trie (Prefix Tree)?
So if I have to choose between a hash table or a prefix tree what are the discriminating factors that would lead me to choose one over the other. From my own naive point of view it seems as though using a trie has some extra overhead since it isn't stored as an array but that in terms of run time (a...
Android: When should I use a Handler() and when should I use a Thread?
...en I need something to run asynchronously , such as a long running task or a logic that uses the network, or for whatever reason,
Starting a new Thread and running it works fine.
Creating a Handler and running it works as well.
What's the difference? When should I use each one?
What are the a...
Print All JVM Flags
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Do not miss also -XX:+JVMCIPrintProperties for Graal JIT options.
Before dive into sources you can skim over following extracts and find suitable option faster:
https://chriswhocodes.com/ (OracleJDK 6/7/8/9/10/11/12, OpenJDK 8/9/10/11, Graal CE/EE, OpenJ9, Zing)
h...
Return a value from AsyncTask in Android [duplicate]
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It not work, e.g. myTask mTask = new myTask(); mTask.execute(); will not return the myHandledValueType.
– Cheung
Aug 30 '13 at 5:19
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What are best practices that you use when writing Objective-C and Cocoa? [closed]
..., but what programming practices do you use when writing Objective-C, and more specifically when using Cocoa (or CocoaTouch).
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