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How to get the original value of an attribute in Rails
...previous value.
For rails 5.1+
Copied from Lucas Andrade's answer below: https://stackoverflow.com/a/50973808/9359123
Appending _was is deprecated in rails 5.1, now you should append _before_last_save
Something like:
before_save object
do_something_with object.name_before_last_save
end
W...
Android: What is android.R.id.content used for?
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How can I reference the value of a final static field in the class?
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Android equivalent of NSUserDefaults in iOS
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sbt-assembly: deduplication found error
...e.spark" %% "spark-core" % "1.1.0" % "provided"
If needed, read more at
https://github.com/sbt/sbt-assembly#excluding-jars-and-files
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Debugging automatic properties
...
This question is very old but it is worth that it just works in VS 2015.
https://blogs.msdn.microsoft.com/visualstudioalm/2014/11/14/set-breakpoints-on-auto-implemented-properties-with-visual-studio-2015/
class X {
public string name {
set;
get; // setting a breakpoint here will break i...
How to escape a JSON string to have it in a URL?
... has the most optimized format for urlEncoding a js object.
the thread at https://groups.google.com/forum/?fromgroups=#!topic/nodejs/ivdZuGCF86Q
shows benchmarks for encoding and parsing.
Note: After testing, it looks like jsurl.js library uses ECMAScript 5 functions such as Object.keys, Array.map...
Will docker container auto sync time with the host machine?
...
If you are on OSX running boot2docker, see this issue: https://github.com/boot2docker/boot2docker/issues/290
Time synch becomes an issue because the boot2docker host has its time drift while your OS is asleep. Time synch with your docker container cannot be resolved by running y...
Javadoc: package.html or package-info.java
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Difference between jQTouch and jQuery mobile
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