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How to insert a text at the beginning of a file?
...oldfile > newfile
I've included the latter so that you know how to do ranges of lines. Both of these "replace" the start line marker on their affected lines with the text you want to insert. You can also (assuming your sed is modern enough) use:
sed -i 'whatever command you choose' filename
...
“document.getElementByClass is not a function”
... classnames that is more browser compliant? Or is it possible to select a range for the array nodes? (ie. 0-100)?
– user547794
Sep 20 '11 at 5:27
...
time.sleep — sleeps thread or process?
... import Thread
class worker(Thread):
def run(self):
for x in xrange(0,11):
print x
time.sleep(1)
class waiter(Thread):
def run(self):
for x in xrange(100,103):
print x
time.sleep(5)
def run():
worker().start()
waiter(...
Releasing memory in Python
...rss
# create approx. 10**7 int objects and pointers
foo = ['abc' for x in range(10**7)]
mem1 = proc.get_memory_info().rss
# unreference, including x == 9999999
del foo, x
mem2 = proc.get_memory_info().rss
# collect() calls PyInt_ClearFreeList()
# or use ctypes: pythonapi.PyInt_ClearFreeList()
gc....
Best Way to read rss feed in .net Using C#
...ou have a look at the CodeHollow.FeedReader package which supports a wider range of RSS versions, is easier to use and seems more robust. https://github.com/codehollow/FeedReader
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How to sum all column values in multi-dimensional array?
...ducational resource for thousands upon thousands of developers with a wide range of skills/knowledge. (If I downvoted every time I found a code-only answer, I'd run out of rep points.)
– mickmackusa
Aug 24 '18 at 8:08
...
Enums and Constants. Which to use when?
...
Use enums when you want to define a range of values that something can be. Colour is an obvious example like:
public enum Colour
{
White,
Red,
Blue
}
Or maybe a set of possible things like:
(Example I stole from here as I'm lazy)
[FlagsAttribute...
Foreign Key to non-primary key
...when you terminate the room to a date, and re-establish it with a new date range, RM_UID is newid(), and the RM_ApertureID from the previous entry becomes the new RM_ApertureID.
So, if that's the case, RM_ApertureID is a non-unique field, and so you can't set a foreign-key in another table.
And t...
Adding a regression line on a ggplot
... regression line:
fit: your fit of a logistic regression curve
#Create a range of doses:
mm <- data.frame(DOSE = seq(0, max(data$DOSE), length.out = 100))
#Create a new data frame for ggplot using predict and your range of new
#doses:
fit.ggplot=data.frame(y=predict(fit, newdata=mm),x=mm$DOSE)...
Pairs from single list
...irwise(data):
zip(data[::2], data[1::2])
Example:
print(list(pairwise(range(10))))
Output:
[(0, 1), (2, 3), (4, 5), (6, 7), (8, 9)]
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