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Check if the number is integer
I was surprised to learn that R doesn't come with a handy function to check if the number is integer.
12 Answers
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Should I declare Jackson's ObjectMapper as a static field?
...u referred is that you can't be modifying configuration of the mapper once it is shared; but you are not changing configuration so that is fine. If you did need to change configuration, you would do that from the static block and it would be fine as well.
EDIT: (2013/10)
With 2.0 and above, above ...
What blocks Ruby, Python to get Javascript V8 speed? [closed]
...pecialized, highly-experienced (and thus highly-paid) engineers working on it, that have decades of experience (I'm talking individually – collectively it's more like centuries) in creating high-performance execution engines for dynamic OO languages. They are basically the same people who also cr...
Cache Invalidation — Is there a General Solution?
...g, that one thing is dependent on another which can be modified outside of it's control.
If you have an idempotent function from a, b to c where, if a and b are the same then c is the same but the cost of checking b is high then you either:
accept that you sometime operate with out of date inform...
How do I find and view a TFS changeset by comment text?
With TFS I need to find a changeset by comment, and/or by developer. Maybe I'm just blind today, but I don't see a simple way in the Source Control Explorer to do this task?
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Do copyright dates need to be updated? [closed]
Every now and then I see a web site that has an old copyright date. In my mind, I always think "Look at the sucker who forgot to update his copyright year!" Then, while I was hard-coding a copyright year into the site I'm currently designing, it suddenly struck me:
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Does anyone have benchmarks (code & results) comparing performance of Android apps written in Xamari
...ine is more impressive than Google's Dalvik used in Android. I have tested it with HTC Flyer and Acer Iconia Tab tablets to benchmark the C# port of Android through Mono against Java Dalvik, with the C# implementation of Android well and truly trouncing the Java-based Dalvik.
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Clear a terminal screen for real
...g the terminal. Here is some more information on terminal escape codes.
Edit
Here are a few other ways of doing it...
printf "\ec" #\e is ESC in bash
echo -en "\ec" #thanks @Jonathon Reinhart.
# -e Enable interpretation of of backslash escapes
# -n Do not output a new line
KDE
The above ...
How to convert JSON to CSV format and store in a variable
... up JSON data in the browser, but unfortunately I have no clue how to read it. Is there a way to convert this data using JavaScript in CSV format and save it in JavaScript file?
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Displaying the build date
I currently have an app displaying the build number in its title window. That's well and good except it means nothing to most of the users, who want to know if they have the latest build - they tend to refer to it as "last Thursday's" rather than build 1.0.8.4321.
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