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Reference - What does this error mean in PHP?
This is a number of answers about warnings, errors, and notices you might encounter while programming PHP and have no clue how to fix them. This is also a Community Wiki, so everyone is invited to participate adding to and maintaining this list.
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Is it possible to set private property via reflection?
... Property Value from a given Object. Uses Reflection.
/// Throws a ArgumentOutOfRangeException if the Property is not found.
/// </summary>
/// <typeparam name="T">Type of the Property</typeparam>
/// <param name="obj">Object from where the Property Value is returned</para...
What are the different usecases of PNG vs. GIF vs. JPEG vs. SVG?
...little improvement in visible quality. (Of course, this may be a desirable outcome if you're not concerned about filesize, and want to get the best quality image you can.)
Just like PNG-8, PNG-24 supports alpha-transparency, too.
SVG - Lossless / Vector
A filetype that is currently growing in p...
Apache and Node.js on the Same Server
...p://localhost:8000
Also, make sure the following lines are NOT commented out so you get the right proxy and submodule to reroute http requests:
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_http_module modules/mod_proxy_http.so
Then run your Node app on port 8000!
var http = re...
JavaScript + Unicode regexes
... into equivalent ES5. It can be used as part of your build process. Try it out online.
Situation for ES 5 and below
Even though JavaScript operates on Unicode strings, it does not implement Unicode-aware character classes and has no concept of POSIX character classes or Unicode blocks/sub-ranges.
I...
Detect application heap size in Android
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There are two ways to think about your phrase "application heap size available":
How much heap can my app use before a hard error is triggered? And
How much heap should my app use, given the constraints of the Android OS version and hardware of the use...
How to determine if a list of polygon points are in clockwise order?
...ht, and by how much. There is no need to take arc-sine. All we will care about is its magnitude, and of course its sign (positive or negative)!
Do this for each of the other 4 points around the closed path, and add up the values from this calculation at each vertex..
If final sum is positive, you...
Calling C++ class methods via a function pointer
...;
// C++
class TMyClass
{
public:
int DoIt(float a, char b, char c){ cout << "TMyClass::DoIt"<< endl; return a+b+c;};
int DoMore(float a, char b, char c) const
{ cout << "TMyClass::DoMore" << endl; return a-b+c; };
/* more of TMyClass */
};
pt2ConstMember...
Find MongoDB records where array field is not empty
...
You care about two things when querying - accuracy and performance. With that in mind, I tested a few different approaches in MongoDB v3.0.14.
TL;DR db.doc.find({ nums: { $gt: -Infinity }}) is the fastest and most reliable (at least in...
Find the Smallest Integer Not in a List
... Note that this algorithm might be more simply understood without the bit twiddling: "Create a Boolean array of size N" etc. Once you understand it that way, moving to a bitwise version is conceptually easy.
– Jon Skeet
Oct 19 '09 at 5:27
...