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data.table vs dplyr: can one do something well the other can't or does poorly?
...ters. As Grace Hopper would say, Mind your nanoseconds!
3. Syntax
Let's now look at syntax. Hadley commented here:
Data tables are extremely fast but I think their concision makes it harder to learn and code that uses it is harder to read after you have written it ...
I find this remark poi...
Conditional compilation and framework targets
... Perfect. I had just enough experience hacking the msbuild format to know it could be done, but not enough time to figure out all the details. Thank you very much!
– mckamey
May 28 '10 at 15:55
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Input size vs width
...wer is correct according to the HTML specification. I've edited the answer now to clarify things a bit.
– Mark Bell
Aug 5 '15 at 10:19
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sho...
How to POST raw whole JSON in the body of a Retrofit request?
...:"kat"}
The Gson docs have much more on how object serialization works.
Now, if you really really want to send "raw" JSON as the body yourself (but please use Gson for this!) you still can using TypedInput:
interface Foo {
@POST("/jayson")
FooResponse postRawJson(@Body TypedInput body);
}
...
How to install both Python 2.x and Python 3.x in Windows
I do most of my programming in Python 3.x on Windows 7, but now I need to use the Python Imaging Library (PIL), ImageMagick, and wxPython, all of which require Python 2.x.
...
log4j vs logback [closed]
...g log4j behind a selfmade wrapper. We plan to use much more features of it now.
6 Answers
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Shorter syntax for casting from a List to a List?
I know its possible to cast a list of items from one type to another (given that your object has a public static explicit operator method to do the casting) one at a time as follows:
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Namespace + functions versus static methods on a class
...from Herb Sutter: http://www.gotw.ca/gotw/084.htm
The important thing to know is that: In C++ functions in the same namespace as a class belong to that class' interface (because ADL will search those functions when resolving function calls).
Namespaced functions, unless declared "friend," have no ...
Controlling a USB power supply (on/off) with Linux
... USB power management from kernels 2.6.32, which seem to settle in 2.6.38. Now you'll need to wait for the device to become idle, which is governed by the particular device driver. The driver needs to support it, otherwise the device will never reach this state. Unluckily, now the user has no chance...
How do you specify that a class property is an integer?
... everything, including int - but once you are dealing with something of a known type, you'll get sensible intelliSense.
Examples
var myInt: number;
var myString: string;
myInt. // toExponential, toFixed, toPrecision, toString
myString. // charAt, charCodeAt, concat, indexOf, lastIndexOf, length a...