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Count how many records are in a CSV Python?
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You need to count the number of rows:
row_count = sum(1 for row in fileObject) # fileObject is your csv.reader
Using sum() with a generator expression makes for an efficient counter, avoiding storing the whole file in memory.
If you already read 2 rows to start ...
Android AsyncTask testing with Android Test Framework
... runTestOnUiThread():
public final void testExecute() {
startActivity(_startIntent, null, null);
runTestOnUiThread(new Runnable() {
public void run() {
Button btnStart = (Button) getActivity().findViewById(R.id.Button01);
btnStart.performClick();
}
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How do I select a random value from an enumeration?
...ve an array of all values. Then select a random array item.
static Random _R = new Random ();
static T RandomEnumValue<T> ()
{
var v = Enum.GetValues (typeof (T));
return (T) v.GetValue (_R.Next(v.Length));
}
Test:
for (int i = 0; i < 10; i++) {
var value = RandomEnumValue&l...
Creating C formatted strings (not printing them)
...nts are ignored by the function.
Example:
// Allocates storage
char *hello_world = (char*)malloc(13 * sizeof(char));
// Prints "Hello world!" on hello_world
sprintf(hello_world, "%s %s!", "Hello", "world");
share
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android studio 0.4.2: Gradle project sync failed error
...me .gradle file out of the way". I tried changing its name for example to "___build.gradle" and it didn't work. What did you mean to?
– Ángel Carlos del Pozo Muela
Jan 17 '14 at 7:42
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Get all related Django model objects
...his gives you the property names for all related objects:
links = [rel.get_accessor_name() for rel in a._meta.get_all_related_objects()]
You can then use something like this to get all related objects:
for link in links:
objects = getattr(a, link).all()
for object in objects:
# d...
Swift performSelector:withObject:afterDelay: is unavailable [duplicate]
I have an app in Objective C that I'm transitioning to Swift. In Objective C, I have this method:
3 Answers
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Android Studio rendering problems
...o 0.2.3 and when opened an activity layout normally, the preview should appear on the right side, so that I can switch between Text and Design mode, which should again show the preview of the layout.
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Failed to load JavaHL Library
...tput from the last command could look like this, for example:
/usr/lib/x86_64-linux-gnu/jni/libsvnjavahl-1.so
This gives you the path, so you can add the following to your eclipse.ini:
-Djava.library.path=/usr/lib/x86_64-linux-gnu/jni/
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Matplotlib - Move X-Axis label downwards, but not X-Axis Ticks
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If the variable ax.xaxis._autolabelpos = True, matplotlib sets the label position in function _update_label_position in axis.py according to (some excerpts):
bboxes, bboxes2 = self._get_tick_bboxes(ticks_to_draw, renderer)
bbox = mtransforms...