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How to exit if a command failed?
I am a noob in shell-scripting. I want to print a message and exit my script if a command fails. I've tried:
8 Answers
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Java Immutable Collections
...te collection that can still change, an instance of ImmutableList contains its own private data and will never change.
So, basically, in order to get an immutable collection out of a mutable one, you have to copy its elements to the new collection, and disallow all operations.
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Pointer expressions: *ptr++, *++ptr and ++*ptr
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Here's a detailed explanation which I hope will be helpful. Let's begin with your program, as it's the simplest to explain.
int main()
{
const char *p = "Hello";
while(*p++)
printf("%c",*p);
return 0;
}
The first statement:
const char* p = "Hello";
declares p as a pointer...
Is there any way to close a StreamWriter without closing its BaseStream?
My root problem is that when using calls Dispose on a StreamWriter , it also disposes the BaseStream (same problem with Close ).
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Comparison between Corona, Phonegap, Titanium
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I registered with stackoverflow just for the purpose of commenting on the mostly voted answer on top. The bad thing is stackoverflow does not allow new members to post comments. So I have to make this comment more look like an answer.
Ror...
Node.js or Erlang
I really like these tools when it comes to the concurrency level it can handle.
9 Answers
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What is the difference between a URI, a URL and a URN?
...form Resource Locator" (URL) refers to the subset of URIs
that, in addition to identifying a resource, provide a means of
locating the resource by describing its primary access mechanism
(e.g., its network "location"). The term "Uniform Resource Name"
(URN) has been used histori...
What are the recommendations for html tag?
...r seen <base> HTML tag actually used anywhere before. Are there pitfalls to its use that means I should avoid it?
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$(document).ready shorthand
...er is a function). See here.
The code in your question has nothing to do with .ready(). Rather, it is an immediately-invoked function expression (IIFE) with the jQuery object as its argument. Its purpose is to restrict the scope of at least the $ variable to its own block so it doesn't cause confli...
Is “argv[0] = name-of-executable” an accepted standard or just a common convention?
...r if the program name is not available from the host environment.
So no, it's only the program name if that name is available. And it "represents" the program name, not necessarily is the program name. The section before that states:
If the value of argc is greater than zero, the array members...