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Parsing JSON with Unix tools
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There are a number of tools specifically designed for the purpose of manipulating JSON from the command line, and will be a lot easier and more reliable than doing it with Awk, such as jq:
curl -s 'https://api.github.com/users/lambda' | jq -r '.name'
You can...
Why is the time complexity of both DFS and BFS O( V + E )
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If in an adjacency list, each vertex is connected to all other vertices the would the complexity be equivalent to O(V+E)=O(V+V^2)=O(V^2). E=V^2 because the most number of edges = V^2.
– Max
Feb 24 '17 at 8:29
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When should a class be Comparable and/or Comparator?
... Comparable means "I can compare myself with another object." This is typically useful when there's a single natural default comparison.
Implementing Comparator means "I can compare two other objects." This is typically useful when there are multiple ways of comparing two instances of a type - e.g....
How to configure slf4j-simple
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Actually it (defaultLogLevel) works.Just found I was modifying the program in a wrong folder ;-) And defaultlog doesn't work. So you probably want to edit your answer though I've accepted it
– Gelin Luo
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boolean in an if statement
... will type coerce two things to be the same type and unless you understand all those rules and can anticipate everything that the JS interpreter might do when given two different types (which most JS developers cannot), you probably want to avoid == entirely.
As an example of how confusing it can b...
How to achieve code folding effects in Emacs?
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Folding is generally unnecessary with emacs, as it has tools that explicitly implement the actions people do manually when folding code.
Most people have good success with simple incremental searches. See "foo" mentioned somewhere? Type C-...
Difference between namespace in C# and package in Java
...n java you have to import a class, not a package. It IS possible to import all classes in a package with an import package.* but that too imports the classes, not the package.
– Imus
May 23 '18 at 7:54
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Android Shared preferences for creating one time activity (example) [closed]
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apply() is asynchronous call to perform disk I/O where as commit() is synchronous. So avoid calling commit() from the UI thread.
– Aniket Thakur
Nov 10 '15 at 8:55
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UI Terminology: Logon vs Login [closed]
...nce you're looking for correctness,
login, logout, logon, and logoff are all nouns:
"Please enter your login credentials."
"I see three logons but only two logoffs from this user."
The corresponding verbs are each two words:
"Please log in to see your reputation."
"You must log off and talk to...
Import SQL dump into PostgreSQL database
...re you're already connected to the correct database. This command executes all of the SQL commands in the specified file.
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