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BigDecimal setScale and round
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See: "precision": The digit count starts from the leftmost nonzero digit of the exact result. docs.oracle.com/javase/7/docs/api/java/math/BigDecimal.html
– Eddy
Sep 6 '16 at 7:06
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How SignalR works internally?
...al to respond. When there is a signal or the request times out, it returns from the server and sends another request and the process continues. (I left some details out about how the client it keeps track of what it saw so it doesn't miss messages)
Hopefully that answers most of your question.
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How to escape special characters in building a JSON string?
.... If you simply use language or library functions to convert things to and from JSON, you'll never even need to know JSON's escaping rules. This is what the misguided question asker here ought to have done.
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Android, How can I Convert String to Date?
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From String to Date
String dtStart = "2010-10-15T09:27:37Z";
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
try {
Date date = format.parse(dtStart);
System.out.println(date);
} ...
How do I create directory if none exists using File class in Ruby?
...to(tokens.size - 1) do |n|
# Builds directory path one folder at a time from top to bottom
unless n == (tokens.size - 1)
new_dir << "#{tokens[n].to_s}/" # All folders except innermost folder
else
new_dir << "#{tokens[n].to_s}" # Innermost folder
end
# Creates director...
What is the difference between a mutable and immutable string in C#?
...to make a copy of it if you want to be absolutely sure it won't change out from under you. This is why mutable objects are dangerous to use as keys into any form of Dictionary or set- the objects themselves could change, and the data structure would have no way of knowing, leading to corrupt data th...
Hibernate: “Field 'id' doesn't have a default value”
...te is set up to automatically create/manage the DB schema. To drop tables from a managed schema, SET foreign_key_checks = 0; is your friend. Just be sure to SET foreign_key_checks = 1; when you're done.
– aroth
Aug 27 '12 at 5:00
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ReactJS: Modeling Bi-Directional Infinite Scrolling
...not prudent to load them all into the browser, so I am doing async fetches from time to time. For some reason, on occasion when I scroll and position jumps very far (say I go off the screen and back), the ListBody doesn't re-render, even though the state changes. Any ideas why this might be? Great e...
Do rails rake tasks provide access to ActiveRecord models?
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All your rails models etc. will be available for the current environment from within each task block, unless you're using the production environment, in which case you need to require the specific models you want to use. Do this within the body of the task. (IIRC this varies between different ver...
IntelliJ Split Window Navigation
... window (horizontal or vertical) into N tab groups, how do I switch/toggle from one tab group to another via the keyboard? If all of the tabs are in the same group you can switch from each tab easily (CTRL + right/left arrow), but when they're in separate tab groups I can't. I've searched through ...