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Why can't variable names start with numbers?
... If it had to be numbers+alpha, then you could still do String 0x123 = "Hello World". Unless you state that variable names are "numbers+alpha that don't parse to a valid numeric designation", and that's just silly.
– eaolson
Oct 11 '09 at 3:56
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Mathematical functions in Swift
... and also classes for user interface, it depends if your playground is for OS X or iOS.
For OS X, you need import Cocoa.
import Cocoa
For iOS, you need import UIKit.
import UIKit
You can easily discover your playground platform by opening File Inspector (⌥⌘1).
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Instagram how to get my user id from username?
... searched for. Eg. if you're searching for "fred1" but there's also a "fred123", you'll get random results! Reported to instagram; awaiting a response :(
– Danny Tuppeny
Aug 13 '14 at 9:06
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Update built-in vim on Mac OS X
... in Terminal.app like so.
alias vim='/Applications/MacVim.app/Contents/MacOS/Vim' # or something like that, YMMV
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Path.Combine for URLs?
... if (Uri.TryCreate(new Uri("localhost/MyService/"), "/Event/SomeMethod?abc=123", out result)) { Console.WriteLine(result); } It is showing me result as : localhost/Event/SomeMethod?abc=123 Note: "http://" is replaced from base Uri here by stackoverflow
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List directory in Go
...returns a list of sorted directory entries.
The resulting slice contains os.FileInfo types, which provide the methods listed here. Here is a basic example that lists the name of everything in the current directory (folders are included but not specially marked - you can check if an item is a folde...
How to write a simple database engine [closed]
...rt of each column to have the length of this column
like "Adam", 1, 11.1, "123 ABC Street POBox 456"
you can have it like
<&RowHeader, 1><&Col1,CHR, 4>Adam<&Col2, num,1,0>1<&Col3, Num,2,1>111<&Col4, CHR, 24>123 ABC Street POBox 456<&RowTrailer...
Oracle: how to UPSERT (update or insert into a table?)
...hioned way"):
begin
insert into t (mykey, mystuff)
values ('X', 123);
exception
when dup_val_on_index then
update t
set mystuff = 123
where mykey = 'X';
end;
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How do I specify new lines on Python, when writing on files?
... you really want to get it right, you look up the newline character in the os package. (It's actually called linesep.)
Note: when writing to files using the Python API, do not use the os.linesep. Just use \n; Python automatically translates that to the proper newline character for your platform.
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How to disable typing special characters when pressing option key in Mac OS X? [closed]
...ixes one key combo in one app. I and at least some others would want to across the board disable opt as special characters input on mac.
– javadba
Jan 25 '14 at 21:51
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