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How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?
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Minor update: brew now also has the option to use brew services stop postgresql and brew services start postgresql instead of directly calling launchctl unload and launchctl load.
– florish
Mar 1 '17 at 15...
Long press on UITableView
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Don't forget, gesture recognizers can now be added to UI elements directly in Interface Builder and connected through an IBAction method, so this answer is even easier ;-) (just remember to attach the recognizer to the UITableView, not the UITableViewCell...)
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Double vs single quotes
...the user
Interpolating with single quotes does not work at all:
'#{Time.now}'
=> "\#{Time.now}" # which is not what you want..
Best practice
As most of the Ruby Linters suggest use single quote literals for your strings and go for the double ones in the case of interpolation/escaping sequen...
ruby 1.9: invalid byte sequence in UTF-8
...?)"/i) instead of nokogiri/hpricot (major speedup). The problem is that I now receive a lot of " invalid byte sequence in UTF-8 " errors.
From what I understood, the net/http library doesn't have any encoding specific options and the stuff that comes in is basically not properly tagged.
What ...
Bash: Strip trailing linebreak from output
... My up-vote is for the head -c ... version -- Because I can now feed commands to the clipboard and preserve formatting, but for the last \n. Eg.: alias clip="head -c -1 | xclip -selection clipboard", not too shabby. Now when you pipe ls -l | clip ... All that wonderful output goes ...
What is the JavaScript version of sleep()?
...ion was asked, JavaScript has evolved significantly. All other answers are now obsolete or overly complicated. Here is the current best practice:
function sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
async function demo() {
console.log('Taking a break...');...
use localStorage across subdomains
...afari 7+ both on desktop and mobile to block 3rd party data. The option is now called "Block cookies and other website data" which refers to things like localstorage which are now completely isolated by domain. This method wont work in Safari
– Aranganathan
Jul...
SQL Server equivalent to Oracle's CREATE OR REPLACE VIEW
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I used to be a "Drop" then (re) "Add" person. But now I lean to this type of solution (add if not there, then alter).
– granadaCoder
Aug 6 '12 at 13:44
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Is pass-by-value a reasonable default in C++11?
... void foo(T const&); and void foo(T&&);.
With that in mind, I now wrote my valued constructors as such:
class T {
U u;
V v;
public:
T(U u, V v)
: u(std::move(u))
, v(std::move(v))
{}
};
Otherwise, passing by reference to const still is reasonable.
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Query-string encoding of a Javascript Object
Do you know a fast and simple way to encode a Javascript Object into a string that I can pass via a GET Request?
40 Ans...