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Append an object to a list in R in amortized constant time, O(1)?
If I have some R list mylist , you can append an item obj to it like so:
17 Answers
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Rolling median algorithm in C
...ture, there appear to be two reasonably efficient ways to do it. The first is to sort the initial window of values, then perform a binary search to insert the new value and remove the existing one at each iteration.
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How do I rename a column in a database table using SQL?
If I wish to simply rename a column (not change its type or constraints, just its name) in an SQL database using SQL, how do I do that? Or is it not possible?
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Block Comments in Clojure
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Actually, there is a way!
(comment
(defn hey []
("Hey there!"))
Check me out!
)
Just wrap your comments in (comment ..) :)
Have fun!
share
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What is the status of JSR 305?
I have seen the question JSR305 vs. JSR308 (Java Type Anotations) - Which is going to be the standard? and I understand the difference between JSR 308 and JSR 305 .
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How can I get the current date and time in UTC or GMT in Java?
When I create a new Date object, it is initialized to the current time but in the local timezone. How can I get the current date and time in GMT?
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Create a string with n characters
Is there a way in java to create a string with a specified number of a specified character? In my case, I would need to create a string with 10 spaces. My current code is:
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How do I change the value of a global variable inside of a function
...lue from inside a function and use it from another function, how do I do this?
5 Answers
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Hash Map in Python
...ent a HashMap in Python. I want to ask a user for an input. depending on his input I am retrieving some information from the HashMap. If the user enters a key of the HashMap, I would like to retrieve the corresponding value.
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Oracle JDBC ojdbc6 Jar as a Maven Dependency
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It is better to add new Maven repository (preferably using your own artifactory) to your project instead of installing it to your local repository.
Maven syntax:
<dependency>
<groupId>com.oracle</groupId>...