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Apache Spark: map vs mapPartitions?
...mon", "salmon", "rat", "elephant"), 3)
val b = a.map(_.length)
val c = a.zip(b)
c.collect
res0: Array[(String, Int)] = Array((dog,3), (salmon,6), (salmon,6), (rat,3), (elephant,8))
mapPartitions
This is a specialized map that is called only once for each partition.
The entire content of...
Various ways to remove local Git changes
...en scripting deployment, and you want to clean your code before deploying, zipping or whatever.
Git clean will not touch files, that are already being tracked.
Checkout "dot"
git checkout .
I had actually never seen this notation before reading your post. I'm having a hard time finding document...
Servlet returns “HTTP Status 404 The requested resource (/servlet) is not available”
...ect, Export > WAR file in Eclipse) and then inspect its contents with a ZIP tool. If the servlet class is missing in /WEB-INF/classes, or if the export causes an error, then the project is badly configured or some IDE/project configuration defaults have been mistakenly reverted (e.g. Project >...
What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?
...or PDF is for that amtter), nor that it can be compressed (I mean, you can ZIP it, but it doesn't contain compressed data).
– ChrisW
Jan 7 '09 at 14:01
2
...
How to read a large file - line by line?
...anceFactor)
p = Pool(numProcesses)
partialSum = p.starmap(ReadFileSegment, zip(startByte, endByte, repeat(fileName))) # startByte is already a list. fileName is made into a same-length list of duplicates values.
globalSum = sum(partialSum)
print(globalSum)
def ReadFileSegment(startByte, endByte, f...
Shared-memory objects in multiprocessing
... def update_par(self, evidence):
self.pool.map(propagate, zip(range(self.N), [self.arrayHdl] * self.N, [evidence] * self.N))
def update_seq(self, evidence):
for i in range(self.N):
propagate((i, self.arrayHdl, evidence))
def getArray(sel...
使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网
...d 应用程序。您可以在此处下载包含完整应用程序代码的 zip 文件。要使用代码，请将其解压缩并导入 Eclipse 或 Android Studio 进行修改和构建。您可以在此处下载应用程序的预构建版本。
辅助应用程序充当 App Inventor 和 Android SDK ...
Why do people use Heroku when AWS is present? What distinguishes Heroku from AWS? [closed]
... It takes ~5 minutes to deploy on Beanstalk. Choose platform -> Upload zip -> Rejoice. Want to deploy by pushing to master? Spend another 5 minutes setting up CodePipeline. Both of these workflows can be done using just the GUI console if the CLI is intimidating for you.
...
Regular expressions in C: examples?
...;
}
Install PCRE using:
wget https://ftp.pcre.org/pub/pcre/pcre2-10.31.zip
make
sudo make install
sudo ldconfig
Compile using :
gcc foo.c -lpcre2-8 -o foo
Check my answer for more details.
share
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...
How to install GCC piece by piece with GMP, MPFR, MPC, ELF, without shared libraries?
...brary.
wget ftp://gcc.gnu.org/pub/gcc/infrastructure/gmp-4.3.2.tar.bz2
bunzip2 gmp-4.3.2.tar.bz2
tar xvf gmp-4.3.2.tar
cd gmp-4.3.2
./configure --disable-shared --enable-static --prefix=/tmp/gcc
make && make check && make install
MPFR
MPFR is the GNU Multiple-precision floating-p...