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What's the difference between an exclusive lock and a shared lock?
...k that part of the file.
A shared or read lock prohibits any other process from requesting a write lock on the specified part of the file. However, other processes can request read locks.
More on that : http://www.gnu.org/software/libc/manual/html_node/File-Locks.html
...
What's the difference between process.cwd() vs __dirname?
...
process.cwd() returns the current working directory,
i.e. the directory from which you invoked the node command.
__dirname returns the directory name of the directory containing the JavaScript source code file
share
...
Why is the standard session lifetime 24 minutes (1440 seconds)?
...y called PHPLIB, initially written by Boris Erdmann and Kristian Koehntopp from NetUSE AG, provided sessions via PHP3 code.
Session lifetimes were defined in minutes, not seconds. And the default lifetime was 1440 minutes, or exactly one day. Here's that line of code from PHPLIB:
var $gc_time ...
How to loop through all but the last item of a list?
...nts in the sequence pair wise, use this approach (the pairwise function is from the examples in the itertools module).
from itertools import tee, izip, chain
def pairwise(seq):
a,b = tee(seq)
b.next()
return izip(a,b)
for current_item, next_item in pairwise(y):
if compare(current_...
Does Java 8 provide a good way to repeat a value or function?
... 8)
.forEach(System.out::println);
If you need a step different from 1, you can use a mapping function, for example, for a step of 2:
IntStream.rangeClosed(1, 8)
.map(i -> 2 * i - 1)
.forEach(System.out::println);
Or build a custom iteration and limit the size of t...
Setting HTTP headers
...ow CORS works) is that the HTTP Method of a preflight request is different from the HTTP Method of the actual request. To initiate CORS, the browser sends a preflight request with HTTP Method OPTIONS, which you have to handle explicitly in your router, and then, if it receives the appropriate respon...
How to do a git diff on moved/renamed file?
...ure, and new users shouldn't
have to dig in the documentation to benefit from it.
Potential objections to activating rename detection are that it
sometimes fail, and it is sometimes slow. But rename detection is
already activated by default in several cases like "git status" and "git merg...
Configure Sublime Text on OS X to show full directory path in title bar
... how can I confiugre so that insteas of showing the full path from ~/Users/username... it will show only from the current directory that i am working on. For example instead of /Users/username/Desktop/Main/child/project-frontend/src/app/menu.js it will only show project-frontend/src/a...
Setting a WebRequest's body data
...
With HttpWebRequest.GetRequestStream
Code example from http://msdn.microsoft.com/en-us/library/d4cek6cc.aspx
string postData = "firstone=" + inputData;
ASCIIEncoding encoding = new ASCIIEncoding ();
byte[] byte1 = encoding.GetBytes (postData);
// Set the content type of th...
How do I output the difference between two specific revisions in Subversion?
... @Fonix are you in the paradigm of "how does another commit differ from my current state"? If so, I agree. I usually think of chronological changes commits, so changes made in HEAD would have been the new/added changes from PREV, which is the paradigm I usually think in. There are cases and ...