good example of Javadoc
How about the JDK source code, but accessed through a 3rd party like docjar? For example, the Collections source. That way, there’s no big download.
Difference between long double and double in C and C++ [duplicate]
To quote the C++ standard, §3.9.1 ¶8: There are three floating point types: float, double, and long double. The type double provides at least as much precision as float, and the type long double provides at least as much precision as double. The set of values of the type float is a subset of the … Read more
No Module named PIL
As per my comment since it helped you out and answered your problem: The issue that you were seeing is that you had pip version 1.5.6, and the version of pip does dictate how packages are unzipped, which ultimately determines whether or not modules are loaded properly. All that is needed is: Which allows pip … Read more
Error: attempt to use zero-length variable name
I’ve posted an issue on dplyr github page. I can reproduce the results using the code below. It has to do with whether the csv contains a column of rownames without a header. read_csv and read.csv handle this differently, thus producing differing results with filter. First the case when it works write_csv to read_csv or read.csv; both work fine with filter Now for when it fails … Read more
How to export data to CSV in PowerShell?
This solution creates a psobject and adds each object to an array, it then creates the csv by piping the contents of the array through Export-CSV. If you pipe a string object to a csv you will get its length written to the csv, this is because these are properties of the string, See here for more … Read more
What is the LD_PRELOAD trick?
If you set LD_PRELOAD to the path of a shared object, that file will be loaded before any other library (including the C runtime, libc.so). So to run ls with your special malloc() implementation, do this:
Warning comparison between pointer and integer
It should be In C, simple quotes delimit a single character whereas double quotes are for strings.
Error when checking Java version: could not find java.dll
Reinstall JDK and set system variable JAVA_HOME on your JDK. (e.g. C:\tools\jdk7)And add JAVA_HOME variable to your PATH system variable Type in command line and To verify whether your installation was done successfully.
How to convert byte array to string and vice versa?
Your byte array must have some encoding. The encoding cannot be ASCII if you’ve got negative values. Once you figure that out, you can convert a set of bytes to a String using: There are a bunch of encodings you can use, look at the supported encodings in the Oracle javadocs.
Syntax for an async arrow function
Async arrow functions look like this: Async arrow functions look like this for a single argument passed to it: Async arrow functions look like this for multiple arguments passed to it: The anonymous form works as well: An async function declaration looks like this: Using async function in a callback: Using async method inside of a class: