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How to check if command line tools is installed
...as it appears in the Applications directory.
There are also the xcodebuild and xcode-select files in /usr/bin
I need to know if the command line tools is installed.
Is there a command for it?
What can I do to see if XCode CLT is installed and if yes to find the version installed?
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What is the difference between i++ and ++i?
I've seen them both being used in numerous pieces of C# code, and I'd like to know when to use i++ or ++i ( i being a number variable like int , float , double , etc). Anyone who knows this?
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How do I find the time difference between two datetime objects in python?
...nly holds the difference.
In the example above it is 0 minutes, 8 seconds and 562000 microseconds.
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What are the use cases for selecting CHAR over VARCHAR in SQL?
...R(10) = 10 bytes (4 bytes of waste)
The bottom line is CHAR can be faster and more space-efficient for data of relatively the same length (within two characters length difference).
Note: Microsoft SQL has 2 bytes of overhead for a VARCHAR. This may vary from DB to DB, but generally, there is at lea...
uint8_t vs unsigned char
... It wasn't clear in the original question if we were talking about a standard type or not. I'm sure there have been many variations of this naming convention over the years.
– Mark Ransom
Nov 12 '09 at 22:50
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How can I prevent the backspace key from navigating back?
On IE I can do this with the (terribly non-standard, but working) jQuery
33 Answers
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JavaScript moving element in the DOM
...ee <div> elements on a page. How can I swap positions of the first and third <div> ? jQuery is fine.
7 Answe...
Split code over multiple lines in an R script
... issue, try
R> setwd(paste("~/a/very/long/path/here",
"/and/then/some/more",
"/and/then/some/more",
"/and/then/some/more", sep=""))
which also illustrates that it is perfectly fine to break code across multiple lines.
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HTML colspan in CSS
...ing absolute positioning, sizing, along with a similar variety of browser- and circumstance-specific caveats. Read, and make the best informed decision you can based on what you find.
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Uploading both data and files in one form using Ajax?
I'm using jQuery and Ajax for my forms to submit data and files but I'm not sure how to send both data and files in one form?
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