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How to count the number of set bits in a 32-bit integer?
...all enough counts) that this doesn't produce carry into that top 8 bits.
A 64-bit version of this can do 8x 8-bit elements in a 64-bit integer with a 0x0101010101010101 multiplier, and extract the high byte with >>56. So it doesn't take any extra steps, just wider constants. This is what GCC...
What are bitwise shift (bit-shift) operators and how do they work?
... of two that added together makes 320:
(row * 320) = (row * 256) + (row * 64)
Now we can convert that into left shifts:
(row * 320) = (row << 8) + (row << 6)
For a final result of:
memoryOffset = ((row << 8) + (row << 6)) + column
Now we get the same offset as before...
Firebase Storage How to store and Retrieve images [closed]
...mmend that you use this for storing images, instead of storing them as base64 encoded data in the JSON database.
You certainly can! Depending on how big your images are, you have a couple options:
1. For smaller images (under 10mb)
We have an example project that does that here: https://github.c...
“Failed to load platform plugin ”xcb“ ” while launching qt5 app on linux without qt installed
...the /usr/bin/platforms dir created. Solved with: sudo ln -sf /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/ /usr/bin/
– gipsh
Mar 13 '17 at 17:31
...
Unable to execute dex: GC overhead limit exceeded in Eclipse
... @MuhammadRiyaz It depends on your OS and whether you're using a 32-bit or 64-bit JVM. If you're on a 64 bit JVM, you can safely set it to anything smaller than your RAM size minus overhead for OS/other applications. On a 32 bit VM, you'll want to keep it smaller than about 1500M (on Linux) or 110...
How to JSON serialize sets?
...isappeared
updated the call to the parents' default with super()
using base64 to serialize the bytes type into str (because it seems that bytes in python 3 can't be converted to JSON)
from decimal import Decimal
from base64 import b64encode, b64decode
from json import dumps, loads, JSONEncoder
imp...
How do I find which rpm package supplies a file I'm looking for?
...d that yum would install the mod_files.sh file with the php-devel x86_64 5.1.6-23.2.el5_3 package, but the file appears to not to be installed on my filesystem.
...
Create thumbnail image
... break;
}
return flipType;
}
//== convert image to base64
public string convertImageToBase64(Image image)
{
using (MemoryStream ms = new MemoryStream())
{
//convert the image to byte array
image.Save(ms, ImageFormat.Jpeg);
byte[] bin = ms.ToArray()...
What is the difference between the 'COPY' and 'ADD' commands in a Dockerfile?
...the useless compressed package.
For COPY:
COPY resources/jdk-7u79-linux-x64.tar.gz /tmp/
RUN tar -zxvf /tmp/jdk-7u79-linux-x64.tar.gz -C /usr/local
RUN rm /tmp/jdk-7u79-linux-x64.tar.gz
For ADD:
ADD resources/jdk-7u79-linux-x64.tar.gz /usr/local/
ADD supports local-only tar extraction. Beside...
Update Eclipse with Android development tools v. 23
...e should now work with auto-update, so install these new versions:
linux 64 bit vm: http://dl.google.com/android/adt/adt-bundle-linux-x86_64-20140702.zip
linux 32 bit vm: http://dl.google.com/android/adt/adt-bundle-linux-x86-20140702.zip
mac: http://dl.google.com/android/adt/adt-bundle-mac-x86_64-...