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How to capture stdout output from a Python function call?
...sage:
with Capturing() as output:
do_something(my_object)
output is now a list containing the lines printed by the function call.
Advanced usage:
What may not be obvious is that this can be done more than once and the results concatenated:
with Capturing() as output:
print('hello world...
What are “first class” objects?
...{ return n * 2; }
void g(Action<int> a, int n) { return a(n); }
// Now call g and pass f:
g(f, 10); // = 20
This is an example in C# where functions actually aren't first-class objects. The above code therefore uses a small workaround (namely a generic delegate called Action<>) to p...
Specify JDK for Maven to use
...
Seems that maven now gives a solution here : Compiling Sources Using A Different JDK
Let's say your JAVA_HOME points to JDK7 (which will run maven processes)
Your pom.xml could be :
<build>
<plugins>
<!-- we wan...
Read entire file in Scala?
... I'm too late to the party, but I'd hate for people not to know they can do "io.File("/etc/passwd").slurp" in trunk.
– psp
Aug 26 '09 at 3:48
28
...
How do I get logs/details of ansible-playbook module executions?
...ion to see the effect. With stdout_callback = debug set, the output should now look something like this:
TASK [Say Hello] ********************************
changed: [192.168.1.2] => {
"changed": true,
"rc": 0
}
STDOUT:
Hello!
STDERR:
Shared connection to 192.168.1.2 closed.
There...
Is there an IDictionary implementation that, on missing key, returns the default value instead of th
...e been using that "less efficient" method without realizing it for a while now.
– J Bryan Price
Jan 14 '13 at 22:20
5
...
Generate a heatmap in MatPlotLib using a scatter data set
...in plot; so do (AFAIK) all of the plotting libraries for R; still i don't know if this is the generally accepted term for plots of this type, though i suspect it's likely given that hexbin is short for hexagonal binning, which is describes the essential step in preparing the data for display.)
fr...
CSV new-line character seen in unquoted field error
...
This now gives the same error, but on line starting upload.num_records = csvobject.get_row_count() now
– GrantU
Jun 26 '13 at 9:19
...
In a django model custom save() method, how should you identify a new object?
...ble, but named that way to avoid conflicts, checking self._state.adding is now the preferable way to check.
self.pk is None:
returns True within a new Model object, unless the object has a UUIDField as its primary_key.
The corner case you might have to worry about is whether there are uniquene...
What is a callback function?
... somewhere you can get to it
Execution comes back to where it was in [1]
Now suppose factorial took a really long time, because you're giving it huge numbers and it needs to run on some supercomputing cluster somwhere. Let's say you expect it to take 5 minutes to return your result. You could:
K...