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Is returning by rvalue reference more efficient?
... I had always assumed the dangling reference problem went away automagically when the return type was an r-value reference. Glad I got that straighted out before it bit me. Stack smashing bugs suck.
– deft_code
Jul 15 '09 at 3:03
...
Does it make sense to do “try-finally” without “catch”?
...you want the currently executing method to still throw the exception while allowing resources to be cleaned up appropriately. Below is a concrete example of handling the exception from a calling method.
public void yourOtherMethod() {
try {
yourMethod();
} catch (YourException ex) {...
Using Core Data, iCloud and CloudKit for syncing and backup and how it works together
...ke this:
Core Data on its own, is completely local and does not automatically work with any of Apple's cloud services.
Core Data with iCloud enabled turns on syncing via iCloud. Any changes you save in Core Data are propagated to the cloud, and any changes made in the cloud are automatically downl...
Sorting dropdown alphabetically in AngularJS
...ugh the use of ng-options which is hooked to a controller that in turn is calling a service. Unfortunately the data coming in is a mess and I need to be able to sort it alphabetically.
...
How to convert floats to human-readable fractions?
....out r d
** r is real number to approx
** d is the maximum denominator allowed
**
** based on the theory of continued fractions
** if x = a1 + 1/(a2 + 1/(a3 + 1/(a4 + ...)))
** then best approximation is found by truncating this series
** (with some adjustments in the last term).
**
** Note the ...
HTTP 401 - what's an appropriate WWW-Authenticate header value?
...ing some form of Forms based authentication.
From recollection, Windows Challenge Response uses a different scheme and different arguments.
The trick is that it's up to the browser to determine what schemes it supports and how it responds to them.
My gut feel if you are using forms based authenti...
Find unmerged Git branches?
...
The below script will find all origin/* branches that are ahead of current branch
#!/bin/bash
CURRENT_BRANCH=$(git rev-parse --abbrev-ref HEAD)
echo -e "Current branch: \e[94m$CURRENT_BRANCH\e[0m"
echo ''
git branch -a | grep remotes/origin/ | whil...
Using querySelector with IDs that are numbers
...haracter 1 is U+0031, so you would escape it as \000031 or \31 .
Basically, to escape any numeric character, just prefix it with \3 and append a space character ( ). Yay Unicode!
So your code would end up as (CSS first, JS second):
#\31 {
background: hotpink;
}
document.getElementById(...
What's the difference between echo, print, and print_r in PHP?
...s, although such usage is rare; echo is slightly faster than print. (Personally, I always use echo, never print.)
var_dump prints out a detailed dump of a variable, including its type and the type of any sub-items (if it's an array or an object). print_r prints a variable in a more human-readable f...
How do I accomplish an if/else in mustache.js?
...
The mustache docs are hilarious. "We call it "logic-less" because there are no if statements, else clauses, or for loops." Yeeeeaaaaaa....
– boxed
Nov 10 '15 at 13:25
...