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How to convert DOS/Windows newline (CRLF) to Unix newline (LF) in a Bash script?
... up with no data in the file.
You can't do it the other way round (with standard 'tr').
If you know how to enter carriage return into a script (control-V, control-M to enter control-M), then:
sed 's/^M$//' # DOS to Unix
sed 's/$/^M/' # Unix to DOS
where the '^M' is the control-M charact...
How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?
...that are not marked as being in __block storage are retained by the block, and get released by the block when it is destroyed (when its retain count goes to 0). Here's the documentation on that: developer.apple.com/library/mac/documentation/Cocoa/Conceptual/…
– Ryan
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vertical alignment of text element in SVG
...but it was off screen, so I used a CSS rule "alignment-baseline: hanging", and it did exactly what I was looking for, text at highest point in the SVG container, without a single pixel being offscreen.
– R. Hill
Apr 12 '13 at 15:06
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C++ map access discards qualifiers (const)
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std::map's operator [] is not declared as const, and cannot be due to its behavior:
T& operator[] (const Key& key)
Returns a reference to the value that is mapped to a key equivalent to key, performing insertion if such key does not already exist.
As a r...
In SQL Server, when should you use GO and when should you use semi-colon ;?
...’ve always been confused with when I should use the GO keyword after commands and whether a semi-colon is required at the end of commands. What is the differences and why/when I should use them?
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How can I change the image displayed in a UIImageView programmatically?
...BOutlet to a UIImageView already, then all you have to do is grab an image and call setImage on the receiver (UIImageView). Two examples of grabbing an image are below. One from the Web, and one you add to your Resources folder in Xcode.
UIImage *image = [[UIImage alloc] initWithData:[NSData dataWi...
A Space between Inline-Block List Items [duplicate]
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I have seen this and answered on it before:
After further research I have
discovered that inline-block is a
whitespace dependent method and
is dependent on the font setting. In this case 4px is rendered.
To avoid this you could run all ...
How to split a comma-separated value to columns
...his should not be the accepted answer... A multi-statement TVF (very bad!) and a WHILE loop (even worse) together will perform awfully. Besides, this is a code-only answer and does not even solve the issue There are much better approaches around! For SQL-Server 2016+ look for STRING_SPLIT() (which d...
How to keep environment variables when using sudo
When I use any command with sudo the environment variables are not there. For example after setting HTTP_PROXY the command wget works fine without sudo . However if I type sudo wget it says it can't bypass the proxy setting.
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Best way to compare 2 XML documents in Java
...tion that basically translates a custom message format into an XML message and sends it out the other end. I've got a good set of input/output message pairs so all I need to do is send the input messages in and listen for the XML message to come out the other end.
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