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Why would one use nested classes in C++?
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Android - startActivityForResult immediately triggering onActivityResult
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Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
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How do I modify fields inside the new PostgreSQL JSON datatype?
...one for json; casts are required to manipulate json values).
Merging 2 (or more) JSON objects (or concatenating arrays):
SELECT jsonb '{"a":1}' || jsonb '{"b":2}', -- will yield jsonb '{"a":1,"b":2}'
jsonb '["a",1]' || jsonb '["b",2]' -- will yield jsonb '["a",1,"b",2]'
So, setting a simple...
Where does Java's String constant pool live, the heap or the stack?
...h the other objects created by the application. This change will result in more data residing in the main Java heap, and less data in the permanent generation, and thus may require heap sizes to be adjusted. Most applications will see only relatively small differences in heap usage due to this chang...
Exploitable PHP functions
...re nasty. Some of these don't seem very useful to the attacker. Others are more useful than you might think. For instance if allow_url_fopen=On then a url can be used as a file path, so a call to copy($_GET['s'], $_GET['d']); can be used to upload a PHP script anywhere on the system.
Also if a site...
Mongoose's find method with $or condition does not work properly
...ram' as ObjectId type. To avoid exception,
// the 'param' must consist of more than 12 characters.
User.find( { $or:[ {'_id':objId}, {'name':param}, {'nickname':param} ]},
function(err,docs){
if(!err) res.send(docs);
});
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Insert line break inside placeholder attribute of a textarea?
...ke the placeholder effect using javascript, but i was hoping for something more simple
– amosrivera
Sep 5 '11 at 23:09
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HTML5 Canvas vs. SVG vs. div
...aster things and heavy bitmap manipulation (like animation), but will take more code if you want lots of interactivity.
I've run a bunch of numbers on HTML DIV-made drawing versus Canvas-made drawing. I could make a huge post about the benefits of each, but I will give some of the relevant results ...
Convert JS object to JSON string
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If You need more readable json string You can use space parameter like var formattedJSON = JSON.stringify(j, null, 2);
– Jacek Gzel
Jan 10 '18 at 9:58
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