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MySQL: Fastest way to count number of rows
...unt with this single query:
SELECT FOUND_ROWS();
FOUND_ROWS() has to be called immediately after the data selecting query.
In conclusion, everything actually comes down to how many entries you have and what is in the WHERE statement. You should really pay attention on how indexes are being use...
Is well formed without a ?
...with the form. Those controls for which name/value pairs are submitted are called successful controls. w3c
– SantiBailors
Nov 12 '15 at 10:08
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How to pass a variable from Activity to Fragment, and pass it back?
...ls, the loosely coupled nature can make it really difficult to track who's calling who and where different events take place.
– Johan Paul
Dec 12 '16 at 6:03
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Convert JSON String To C# Object
...keyword, you can read how here.
If you declare a class or struct, you can call Deserialize instead of DeserializeObject like so:
class MyProgram {
struct MyObj {
public string test { get; set; }
}
static void Main(string[] args) {
var json_serializer = new JavaScriptSe...
Iterating a JavaScript object's properties using jQuery
...ject as the first argument and a function as a second. This functions gets calld for every element in the array / every property in the object. Every time the function is called, it get the index and value / name and value passed in as arguments. In my example the parameter "n" are the two string "J...
Animate the transition between fragments
...Nurik this answer worked great on most devices, but for some users (specifically on some Samsung Galaxy S3/4 phones) the width wasn't getting reported during the animations for some reason, causing the fragment to never appear. I was able to get it working for those users using an OnPredrawListener ...
JQuery .on() method with multiple event handlers to one selector
...e .on on the <table> and not on the <td> and it's if you dynamically add <td>s later. $('table td').on... will only effect the <td> that are in the table the moment you call this function. $('table').on(... ,'td',function...) will effect any <td> you will add to this...
Prevent form submission on Enter key press
...op down and one radio button . When the enter key is pressed, I want to call my JavaScript function, but when I press it, the form is submitted.
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Struct constructor: “fields must be fully assigned before control is returned to the caller.”
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@RogerWillcocks, just call the default constructor then: public YourStruct(some params) : this() (see vittore's answer)
– Thomas Levesque
Nov 27 '12 at 2:25
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Maintain/Save/Restore scroll position when returning to a ListView
...e top of the ListView. Then, to restore the ListView's scroll position, we call ListView.setSelectionFromTop() with the index of the item we want and an offset to position its top edge from the top of the ListView.
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