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Very large matrices using Python and NumPy
NumPy is an extremely useful library, and from using it I've found that it's capable of handling matrices which are quite large (10000 x 10000) easily, but begins to struggle with anything much larger (trying to create a matrix of 50000 x 50000 fails). Obviously, this is because of the massive memo...
How to split a string literal across multiple lines in C / Objective-C?
...de it.
#define QUOTE(...) #__VA_ARGS__
const char *sql_query = QUOTE(
SELECT word_id
FROM table1, table2
WHERE table2.word_id = table1.word_id
ORDER BY table1.word ASC
);
the preprocessor turns this into:
const char *sql_query = "SELECT word_id FROM table1, table2 WHERE table2.wo...
Emacs, switch to previous window
...
@phils SHIFT + <keys> meddles with shift selection that is enabled by default from Emacs 23 (shift-selection-mode).
– legends2k
Jul 22 '14 at 12:23
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Producing a new line in XSLT
...aps in csv) you can output something like the following:
<xsl:value-of select="concat(elem1,elem2,elem3,$newline)" />
I've used this technique when outputting sql from xml input. In fact, I tend to create variables for commas, quotes and newlines.
...
Media Player called in state 0, error (-38,0)
...app that streams an internet radio station. I have the URL for the station and am setting up the Media Player like
18 Answe...
Add support library to Android Studio project
...oject Structure (Press F4 on PC and Command+; on MAC) on your project).
2.Select Modules on the left pane.
3.Choose your project and you will see Dependencies TAB above the third Column.
4.Click on the plus sign in the bottom. Then a tree-based directory chooser dialog will pop up, navigate to yo...
importing pyspark in python shell
...
Turns out that the pyspark bin is LOADING python and automatically loading the correct library paths. Check out $SPARK_HOME/bin/pyspark :
# Add the PySpark classes to the Python path:
export PYTHONPATH=$SPARK_HOME/python/:$PYTHONPATH
I added this line to my .bashrc file...
LINQ to SQL: Multiple joins ON multiple Columns. Is this possible?
... from child in context.Childs
where child.Parent.col2 == 4
select new
{
childCol1 = child.col1,
parentCol1 = child.Parent.col1,
};
will generate the query
SELECT [t0].[col1] AS [childCol1], [t1].[col1] AS [parentCol1]
FROM [dbo].[Child] AS [...
Compiling Java 7 code via Maven
...the mvn script in your maven installation to see how it's building the command. Perhaps you or someone else has hard-coded a JAVA_HOME in there and forgotten about it.
share
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improve this answer
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Get the size of the screen, current web page and browser window
... The jQuery method height() seems to work for all elements, and returns a number (46) rather than a string like css('height') ("46px").
– Chris
Feb 6 '13 at 16:02
7
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