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Scatterplot with too many points
...pecify your own low and high colors, or use scale_fill_brewer() and choose from one of the sequential palettes.
– joran
Aug 12 '14 at 14:04
...
Laravel migration: unique key is too long, even if specified
...or storing "emojis" in the database. If you are upgrading your application from Laravel 5.3, you are not required to switch to this character set.
Update 2
Current production MariaDB versions DO NOT support this setting by default globally. It is implemented in MariaDB 10.2.2+ by default.
Soluti...
Duplicate keys in .NET dictionaries?
...the heads-up on Lookup. It offers a great way to partition (group) results from a linq query that aren't standard orderby criteria.
– Robert Paulson
Sep 29 '08 at 20:42
3
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Using margin:auto to vertically-align a div
... - I've never really looked into those issues but I do know that switching from absolute to relative is not in itself a solution to make this work. I read a little bit of your article and it looks like absolute and relative go up to the first absolute or relative ancestor, is that correct?
...
How do I prevent Android taking a screenshot when my app goes to the background?
...is definitely secures against manual screenshots and automatic screenshots from the ICS recent-tasks history. It also secures against screen recording (e.g., apps using the media projection APIs).
UPDATE: it also secures against Now On Tap or other assistants on Android 6.0; they will not get acces...
How to force an entire layout View refresh?
...aw(Canvas) will be called at some point in the future. This must be called from a UI thread. To call from a non-UI thread, call postInvalidate().
ViewGroup vg = findViewById (R.id.mainLayout);
vg.invalidate();
Now, when the Activity resumes, it makes every View to draw itself. No call to inval...
Find out whether Chrome console is open
...ed
console.profiles (2013)
Update: console.profiles has been removed from Chrome. This solution no longer works.
Thanks to Paul Irish for pointing out this solution from Discover DevTools, using the profiler:
function isInspectOpen() {
console.profile();
console.profileEnd();
if (con...
How does the String class override the + operator?
...so optimize away the
creation of a wrapper object by converting directly from a primitive
type to a string.
The optimized version will not actually do a full wrapped String conversion first.
This is a good illustration of an optimized version used by the compiler, albeit without the conversio...
Spring 3 RequestMapping: Get path value
...I was able to wrote a small utility for that purpose:
/**
* Extract path from a controller mapping. /controllerUrl/** => return matched **
* @param request incoming request.
* @return extracted path
*/
public static String extractPathFromPattern(final HttpServletRequest request){
Strin...
Why does changing 0.1f to 0 slow down performance by 10x?
...amplitude (not audible) DC or or square wave signal to jitter numbers away from denormality.
– Russell Borogove
Feb 17 '12 at 0:12
16
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