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MySQL Error 1215: Cannot add foreign key constraint
...ried to search for the answer here, but everything I've found has said to either set the db engine to Innodb or to make sure the keys I'm trying to use as a foreign key are primary keys in their own tables. I have done both of these things, if I'm not mistaken. Any other help you guys could offer?...
Private properties in JavaScript ES6 classes
Is it possible to create private properties in ES6 classes?
38 Answers
38
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What is middleware exactly?
... of people talking recently about middleware , but what is the exact definition of middleware? When I look into middleware, I find a lot of information and some definitions, but while reading these information and definitions, it seems that mostly all 'wares' are in the middle of something. So, are...
Are there strongly-typed collections in Objective-C?
...* number = [arr objectAtIndex:0]; // Warning: Incompatible pointer types initializing 'NSNumber *' with an expression of type 'NSString *'
And in Swift code, they will produce a compiler error:
var str: String = arr[0]
var num: Int = arr[0] //Error 'String' is not convertible to 'Int'
Lightweig...
Find an item in List by LINQ?
Here I have a simple example to find an item in a list of strings. Normally I use for loop or anonymous delegate to do it like this:
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CSS vertical alignment text inside li
I am displaying number of boxes in a row with fix height and width, generated from tags.
now I need to align the text in the vertical center.
The CSS vertical-align has no impact, maybe I am missing something???
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Spring @PropertySource using YAML
Spring Boot allows us to replace our application.properties files with YAML equivalents. However I seem to hit a snag with my tests. If I annotate my TestConfiguration (a simple Java config), it is expecting a properties file.
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How do you debug MySQL stored procedures?
...called "debug" where I insert variable values from the stored procedure as it runs. This allows me to see the value of any variable at a given point in the script, but is there a better way to debug MySQL stored procedures?
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Angularjs $q.all
... only the last deferred object
deferred.resolve(data);
})
When you write var deferred= $q.defer(); inside a for loop it's hoisted to the top of the function, it means that javascript declares this variable on the function scope outside of the for loop.
With each loop, the last deferred is over...
More lines in command window
Is there a possibility to get "more" lines into the command window (Console)?
3 Answers
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