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Binary search (bisection) in Python
...erting or deleting ranges), which are O(1) or O(|range|), given a starting index. If you aren't using those sorts of operations often, then storing as sets, and sorting for display might be a better deal overall. set() incurs very little additional overhead in python.
...
Best way to encode text data for XML in Java?
Very similar to this question , except for Java.
21 Answers
21
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The $.param( ) inverse function in JavaScript / jQuery
...if (k.substr(k.length-2) != '[]') // not end with []. cannot use negative index as IE doesn't understand it
hash[k] = v;
else
hash[k.substr(0, k.length-2)] = [v];
// If subsequent entry with this name and not array
} else if (typeof hash[k] === "string") {
hash[...
How does MongoDB sort records when no sort order is specified?
...ll have the same data outcome when oplog updates are applied.
What if an index is used?
If an index is used, documents will be returned in the order they are found (which does necessarily match insertion order or I/O order). If more than one index is used then the order depends internally on whic...
How to track child process using strace?
... It works for me even used cross platform.
ARM Linux box.
$ ./strace -f -q -s 100 -o app.trc -p 449
$ tftp -pr app.trc 172.0.0.133
X86_64 Linux box.
$ ./strace-graph /srv/tftp/app.trc
(anon)
+-- touch /tmp/ppp.sleep
+-- killall -HUP pppd
+-- amixer set Speaker 70%
+-- amixer set Speak...
Is there a way to use PhantomJS in Python?
... a screenshot to disk
sbtn = driver.find_element_by_css_selector('button.gbqfba')
sbtn.click()
If your system path environment variable isn't set correctly, you'll need to specify the exact path as an argument to webdriver.PhantomJS(). Replace this:
driver = webdriver.PhantomJS() # or add to you...
Make copy of an array
...
total number of elements to copy and the source and destination array
index positions. For example System.arraycopy(source, 3, destination,
2, 5) will copy 5 elements from source to destination, beginning from
3rd index of source to 2nd index of destination.
Arrays.copyOf(): If you wan...
Plot two graphs in same plot in R
...object with basic aesthetics and enhance it incrementally.
ggplot style requires data to be packed in data.frame.
# Data generation
x <- seq(-2, 2, 0.05)
y1 <- pnorm(x)
y2 <- pnorm(x,1,1)
df <- data.frame(x,y1,y2)
Basic solution:
require(ggplot2)
ggplot(df, aes(x)) + ...
Will docker container auto sync time with the host machine?
...
I don't know if the original question was more about timezones (e.g. making sure that the container will honor DST and timezone changes) or accurate time keeping (e.g. making sure that the container clock will not drift). If it's about timezones, that an...
Sorting list based on values from another list?
...at, define your own comparison function which compares values based on the indexes of list Y. The end result should be list Y being untouched and list X being changed into the expected solution without ever having to create a temp list.
– Hatefiend
Sep 9 at 5:2...