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Windows equivalent of the 'tail' command
Is there a way to simulate the *nix tail command on the Windows command line? I have a file and I want a way to snip off the first n lines of text. For example:
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Visual Studio support for new C / C++ standards?
I keep reading about C99 and C++11 and all these totally sweet things that are getting added to the language standard that might be nice to use someday. However, we currently languish in the land of writing C++ in Visual Studio.
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iPhone get SSID without private library
...t to add/link the [+]framework to your project. If you see weird compiling errors when using this method that is probably your problem. To e.g. get the SSID from the returned dictionary use // Getting a dictionary object containing the information of the network the iPhone is connected to NS...
Validate that end date is greater than start date with jQuery
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This yields an error in Google chrome. If you pass a value less than 12 or greater than 31, it ends up being parsed as a date, and hence it's validated as a date as well. I had to separate this into two methods (in hurry), but I'd love to f...
How to check if a string is a valid date
...
require 'date'
begin
Date.parse("31-02-2010")
rescue ArgumentError
# handle invalid date
end
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How do I send a cross-domain POST request via JavaScript?
... textStatus, jqXHR) {
var value = responseData.someKey;
},
error: function (responseData, textStatus, errorThrown) {
alert('POST failed.');
}
});
When you do the POST in step 2, your browser will send a "OPTIONS" method to the server. This is a "sniff" by the browser ...
Why historically do people use 255 not 256 for database field magnitudes?
You often see database fields set to have a magnitude of 255 characters, what is the traditional / historic reason why? I assume it's something to do with paging / memory limits, and performance but the distinction between 255 and 256 has always confused me.
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Constant pointer vs Pointer to constant [duplicate]
...pointer
constant_pointer.c: In function ‘main’:
constant_pointer.c:13: error: increment of read-only variable ‘ptr’
Hence we see very clearly above that compiler complains that we cannot changes the address held by a constant pointer.
Pointer to Constants
#include<stdio.h>
int mai...
How do you do a simple “chmod +x” from within python?
... non-pythonic answer that may be a little more readable: subprocess.check_call(['chmod', '+x', 'somefile']) and let's you more easily do operations like a+rx.
– Trevor Boyd Smith
Aug 6 at 15:28
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setTimeout or setInterval?
...uld go wrong in the function it will just stop repeating at the first time error, instead of repeating the error every second.
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