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Shall we always use [unowned self] inside closure in Swift
In WWDC 2014 session 403 Intermediate Swift and transcript , there was the following slide
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Add a column to a table, if it does not already exist
...columns
WHERE object_id = OBJECT_ID(N'[dbo].[Person]')
AND name = 'ColumnName'
)
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Xcode 6: Keyboard does not show up in simulator
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I had the same issue. My solution was as follows:
iOS Simulator -> Hardware -> Keyboard
Uncheck "Connect Hardware Keyboard"
Mine was checked because I was using my mac keyboard, but if you make sure it is unchecked the iPhone k...
How to generate serial version UID in Intellij
...nable highlight: (Idea v.2016, 2017 and 2018, previous versions may have same or similar settings)
File -> Settings -> Editor -> Inspections -> Java -> Serialization issues -> Serializable class without 'serialVersionUID' - set flag and click 'OK'.
(For Macs, Settings is und...
What is the difference between == and equals() in Java?
...tten to compare, no more, no less.
If a class does not override the equals method, then it defaults to the equals(Object o) method of the closest parent class that has overridden this method.
If no parent classes have provided an override, then it defaults to the method from the ultimate parent cla...
Always pass weak reference of self into block in ARC?
...nce to it.
ad infinitum
Thus, those two objects will just hang around in memory for the life of the program even though they should, if everything were working properly, be deallocated.
So, what we're worried about is retain cycles, and there's nothing about blocks in and of themselves that crea...
Why is 'false' used after this simple addEventListener function?
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According to MDN Web Docs, the third parameter is:
useCapture
If true, useCapture indicates that the user wishes to
initiate capture. After initiating
capture, all events of the specified
type will be dispatched to the
registered listener before being
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SQL statement to select all rows from previous day
I am looking for a good SQL Statement to select all rows from the previous day from one table. The table holds one datetime column. I am using SQL Server 2005.
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How to change text transparency in HTML/CSS?
I'm very new to HTML/CSS and I'm trying to display some text as like 50% transparent. So far I have the HTML to display the text with full opacity
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Installing SciPy and NumPy using pip
...and you'll need to fix/add the correct directories that it incorrectly assumes as well.
The third thing you may need is to yum install numpy-f2py or the equivalent.
Oh, yes and lastly, you may need to yum install gcc-gfortran as the libraries above are Fortran source.
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