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Listing only directories using ls in Bash?
...ches all of the subdirectories in the current directory (* would match all files and subdirectories; the / restricts it to directories). Similarly, to list all subdirectories under /home/alice/Documents, use ls -d /home/alice/Documents/*/
...
Python set to list
...> set=set()
>>> set=set()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'set' object is not callable
The first line rebinds set to an instance of set. The second line is trying to call the instance which of course fails.
Here is a less...
What's the difference between dependencies, devDependencies and peerDependencies in npm package.json
...his happens even though you never mention dependency3 in your package.json file.
I think this is an instance of the Inversion of Control design pattern.
A prototypical example of peer dependencies is Grunt, the host, and its plugins.
For example, on a Grunt plugin like https://github.com/gruntjs/...
Unit test, NUnit or Visual studio?
...s running a
test suite, single tests etc.
The need to keep a Test-Metadata file
which always leads to complications
when several developers are working
on it (recreating e.g. the metadata
etc.). Every other test suite doesn't
need a metadata file. It is kind of
nice to organize your tests but you
ca...
Set folder browser dialog start location
...esktopDirectory
Desktop
"The logical Desktop rather than the physical file system location."
DesktopDirectory:
"The directory used to physically
store file objects on the desktop. Do
not confuse this directory with the
desktop folder itself, which is a
virtual folder."
MSDN - Sp...
C++ Modules - why were they removed from C++0x? Will they be back later on?
... consist of the following:
A module keyword to declare a module, multiple files can declare this to build one module (but for each module only one compilation-unit can contain an export {} section):
module M;
An import keyword to import modules, instead of import it might also be decided to use ...
FFmpeg on Android
...his. So thought of sharing it with you.
Few Basics :
When we say a video file, ex : avi, it is combination of both audio and video
Video file = Video + Audio
Video = Codec + Muxer + Demuxer
codec = encoder + Decoder
=> Video = encoder + decoder + Muxer + Demuxer(Mpeg4 + Mpeg4 + avi +avi -...
What database does Google use?
... field for time, allowing versioning)
tables are optimized for GFS (Google File System) by being split into multiple tablets - segments of the table as split along a row chosen such that the tablet will be ~200 megabytes in size.
Architecture
BigTable is not a relational database. It does not sup...
How to ignore the first line of data when processing CSV data?
...n instance of the csv module's Sniffer class to deduce the format of a CSV file and detect whether a header row is present along with the built-in next() function to skip over the first row only when necessary:
import csv
with open('all16.csv', 'r', newline='') as file:
has_header = csv.Sniffe...
Node JS Error: ENOENT
...forward slash at the beginning of a path means "start from the root of the filesystem, and look for the given path". No forward slash means "start from the current working directory, and look for the given path".
The path
/tmp/test.jpg
thus translates to looking for the file test.jpg in the tmp...