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Multiple simultaneous downloads using Wget?
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Since GNU parallel was not mentioned yet, let me give another way:
cat url.list | parallel -j 8 wget -O {#}.html {}
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Catching error codes in a shell pipe
...mp is present on antique HP-UX. I'm not sure whether there's a common invocation of mktemp that works across platforms. POSIX standardizes neither mktemp nor tmpfile. I didn't find tmpfile on the platforms I have access to. Consequently, I won't be able to use the commands in portable shell scripts...
How can I view the source code for a function?
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The output already offers a lot of information. standardGeneric is an indicator of an S4 function. The method to see defined S4 methods is offered helpfully:
> showMethods(chol2inv)
Function: chol2inv (package base)
x="ANY"
x="CHMfactor"
x="denseMatrix"
x="diagonalMatrix"
x="dtrMatrix"
x="spars...
switch case statement error: case expressions must be constant expression
...lick on the switch keyword. then hit ctrl-1
– Darren Cato
Aug 3 '13 at 13:44
1
The compiler needs...
How to access data/data folder in Android device?
...ything you want with it.
Without rooting you have 2 options:
If the application is debuggable you can use the run-as command in adb shell
adb shell
run-as com.your.packagename
cp /data/data/com.your.packagename/
Alternatively you can use Android's backup function.
adb backup -noapk com.your.pa...
Merge / convert multiple PDF files into one PDF
...ityLevel=1.4 -dPDFSETTINGS=/default -dNOPAUSE -dQUIET -dBATCH -dDetectDuplicateImages -dCompressFonts=true -r150 -sOutputFile=output.pdf input.pdf
cheers!!
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What use is find_package() if you need to specify CMAKE_MODULE_PATH anyway?
... actually need Config mode.
Module mode
Find<package>.cmake file located within your project. Something like this:
CMakeLists.txt
cmake/FindFoo.cmake
cmake/FindBoo.cmake
CMakeLists.txt content:
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake")
find_package(Foo REQUIRED) # ...
Python Pandas: Get index of rows which column matches certain value
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Your suggestion indices = np.flatnonzero(df[col_name] == category_name) gets me exactly what the title of the question asks for, which is surprisingly difficult to find on the Internet.
– ClimbsRocks
Apr 14 '17 at 18:14
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LINQ: Distinct values
... id = (int) element.Attribute("id"),
category = (int) element.Attribute("cat") })
.Distinct();
If you're trying to get a distinct set of values of a "larger" type, but only looking at some subset of properties for the distinctness aspect, you pr...
How to import load a .sql or .csv file into SQLite?
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Try doing it from the command like:
cat dump.sql | sqlite3 database.db
This will obviously only work with SQL statements in dump.sql. I'm not sure how to import a CSV.
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