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Using the Swift if let with logical AND operator &&
We know that we can use an if let statement as a shorthand to check for an optional nil then unwrap.
6 Answers
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Visual Studio 2010 IntelliSense doesn't select a default value - it just marks it
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Try Ctrl-Alt-Space.
found that on Connect, and seems to work for me
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Cleanest way to toggle a boolean variable in Java?
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and it conforms to DRY :)
– Tetha
Oct 22 '08 at 6:21
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List files with certain extensions with ls and grep
I just want to get the files from the current dir and only output .mp4 .mp3 .exe files nothing else.
So I thought I could just do this:
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Remove duplicate lines without sorting [duplicate]
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The UNIX Bash Scripting blog suggests:
awk '!x[$0]++'
This command is telling awk which lines to print. The variable $0 holds the entire contents of a line and square brackets are array access. So, for each line of the file, the node of the array x is incremented and the line printed if ...
Can you have if-then-else logic in SQL? [duplicate]
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The CASE statement is the closest to an IF statement in SQL, and is supported on all versions of SQL Server:
SELECT CASE <variable>
WHEN <value> THEN <returnvalue>
WHEN <othervalue> THEN <returnthis>
ELSE <retur...
How to install python modules without root access?
I'm taking some university classes and have been given an 'instructional account', which is a school account I can ssh into to do work. I want to run my computationally intensive Numpy, matplotlib, scipy code on that machine, but I cannot install these modules because I am not a system administrator...
C# DateTime.Now precision
...y would DateTime.Now be made less precise than what most CPU clocks could handle?
A good clock should be both precise and accurate; those are different. As the old joke goes, a stopped clock is exactly accurate twice a day, a clock a minute slow is never accurate at any time. But the clock a minu...
How to add border radius on table row
...ht. If you want rounded corners in IE, you're going to have to use images and strange markup.
– theazureshadow
Nov 4 '10 at 5:46
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How can I check if a View exists in a Database?
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If you found this to decide between a CREATE and ALTER for a view (as I did), this doesn't work for VIEWs - you have to DROP the VIEW* and then CREATE it. The IF EXISTS still works fine for DROPing the VIEW tho, so thanks! :) * Don't forget about any permissions when y...