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How to resolve “must be an instance of string, string given” prior to PHP 7?
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As of PHP 7.0 type declarations allow scalar types, so these types are now available: self, array, callable, bool, float, int, string. The first three were available in PHP 5, but the last four are new in PHP 7. If you use anything else (e.g. integer or boolean) that will be interpreted as a cla...
sql primary key and index
...ate your own alternate index on that column, then drop the default index.
Now for the fun part--when do you NOT want a unique primary key index? You don't want one, and can't tolerate one, when your table acquires enough data (rows) to make the maintenance of the index too expensive. This varies ...
Retrieving Property name from lambda expression
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now in C# 6 you can simply use nameof like this nameof(User.UserId)
which has many benefits, among them is that this is done at compile time, not runtime.
https://msdn.microsoft.com/en-us/magazine/dn802602.aspx
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How to trace the path in a Breadth-First Search?
...this seems much cleaner. Would it be possible to make a graph if you only know the start and the end but none of the nodes in-between? Or even another approach besides graphs?
– Christopher Markieta
Jan 19 '12 at 7:19
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Requirejs domReady plugin vs Jquery $(document).ready()?
I am using RequireJS and need to initialize something on DOM ready. Now, RequireJS provides the domReady plugin , but we already have jQuery's $(document).ready() , which is available to me since I have required jQuery.
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Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
...this experiment and SQLC_CALC_FOUND_ROWS was much faster than two queries. Now my main table is only 65k and two joins of a few hundreds, but the main query takes 0.18 seconds with or without SQLC_CALC_FOUND_ROWS but when I ran a second query with COUNT(id) it took 0.25 alone.
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What do parentheses surrounding an object/function/class declaration mean? [duplicate]
...n an expression like function(){}() the last parenthesis makes no sense.
Now think at
name=function(){} ; name() !?
Yes, the first pair of parenthesis force the anonymous function to turn into a variable (stored expression) and the second launches evaluation/execution, so ( function(){} )() ma...
Google Authenticator implementation in Python
...s),
Parameters
When it comes to parameters:
secret is a secret value known to server (the above script) and client (Google Authenticator, by providing it as password within application),
intervals_no is the number incremeneted after each generation of the token (this should be probably resolved...
Swift to Objective-C header not created in Xcode 6
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Now it works.
Project must have a Product Module Name that does not include spaces.
Defines Module must be set to Yes in Build Settings, under Packaging.
Finally works. Thanks to everyone for the help :-)
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Set theme for a Fragment
...Activity().getLayoutInflater().cloneInContext(contextThemeWrapper);
// Now take note of the parameter passed into AlertDialog.Builder constructor
AlertDialog.Builder builder = new AlertDialog.Builder(contextThemeWrapper);
View view = inflater.inflate(R.layout.set_server_dialog, null);
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