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Passing an integer by reference in Python
How can I pass an integer by reference in Python?
11 Answers
11
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How to perform mouseover function in Selenium WebDriver using Java?
...ons action = new Actions(webdriver);
WebElement we = webdriver.findElement(By.xpath("html/body/div[13]/ul/li[4]/a"));
action.moveToElement(we).moveToElement(webdriver.findElement(By.xpath("/expression-here"))).click().build().perform();
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How can I join elements of an array in Bash?
...e Bash function that supports multi-character delimiters is:
function join_by { local d=$1; shift; local f=$1; shift; printf %s "$f" "${@/#/$d}"; }
For example,
join_by , a b c #a,b,c
join_by ' , ' a b c #a , b , c
join_by ')|(' a b c #a)|(b)|(c
join_by ' %s ' a b c #a %s b %s c
join_by $'\n' a b c...
PostgreSQL - how to quickly drop a user with existing privileges
... its ownership to other roles (or drop the object).
This is best achieved by
REASSIGN OWNED BY <olduser> TO <newuser>
and
DROP OWNED BY <olduser>
The latter will remove any privileges granted to the user.
See the postgres docs for DROP ROLE and the more detailed description...
Difference between CLOCK_REALTIME and CLOCK_MONOTONIC?
... difference between CLOCK_REALTIME and CLOCK_MONOTONIC clocks returned by clock_gettime() on Linux?
7 Answers
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How to find and return a duplicate value in array
...irst option being the fastest:
ary = ["A", "B", "C", "B", "A"]
ary.group_by{ |e| e }.select { |k, v| v.size > 1 }.map(&:first)
ary.sort.chunk{ |e| e }.select { |e, chunk| chunk.size > 1 }.map(&:first)
And a O(N^2) option (i.e. less efficient):
ary.select{ |e| ary.count(e) > 1 ...
Linear Regression and group by in R
...to a vector. That does not seem very R-like, however. In SAS I would do a 'by' statement and in SQL I would do a 'group by'. What's the R way of doing this?
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Local Storage vs Cookies
I want to reduce load times on my websites by moving all cookies into local storage since they seem to have the same functionality. Are there any pros/cons (especially performance-wise) in using local storage to replace cookie functionality except for the obvious compatibility issues?
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Get JSF managed bean by name in any Servlet related class
...vlet (for AJAX/JSON) in which I would like to reference my @ManagedBeans by name. I'm hoping to map:
6 Answers
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C# string reference type?
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The reference to the string is passed by value. There's a big difference between passing a reference by value and passing an object by reference. It's unfortunate that the word "reference" is used in both cases.
If you do pass the string reference by reference, ...