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Is gcc's __attribute__((packed)) / #pragma pack unsafe?
...an int l-value with 1 byte alignment. c and d are both normal ints. When reading a.i, the compiler generates code for unaligned access. When you read b->i, b's type still knows it's packed, so no problem their either. e is a pointer to a one-byte-aligned int, so the compiler knows how to dere...
Seeing the console's output in Visual Studio 2010?
...ink for abit more info social.msdn.microsoft.com/Forums/en/csharpgeneral/thread/…
– Richard Adnams
Mar 14 '11 at 16:22
...
Function overloading by return type?
...e system, and so you can write code like the following:
main = do n <- readLn
print (sqrt n) -- note that this is aligned below the n, if you care to run this
This code reads a floating point number from standard input, and prints its square root. But what is surprising about this? ...
How can I lock a file using java (if possible)
I have a Java process that opens a file using a FileReader. How can I prevent another (Java) process from opening this file, or at least notify that second process that the file is already opened? Does this automatically make the second process get an exception if the file is open (which solves my p...
ssh “permissions are too open” error
...
Keys need to be only readable by you:
chmod 400 ~/.ssh/id_rsa
If Keys need to be read-writable by you:
chmod 600 ~/.ssh/id_rsa
600 appears to be fine as well (in fact better in most cases, because you don't need to change file permissions l...
How to unzip files programmatically in Android?
...= new FileOutputStream(path + filename);
while ((count = zis.read(buffer)) != -1)
{
fout.write(buffer, 0, count);
}
fout.close();
zis.closeEntry();
}
zis.close();
...
Is there a good reason to use upper case for SQL keywords? [closed]
...-SQL lowercase with database object names MixedCase.
It is much easier to read, and literals and comments stand out.
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Replace a string in a file with nodejs
...tring to be replaced/g, 'replacement');
So...
var fs = require('fs')
fs.readFile(someFile, 'utf8', function (err,data) {
if (err) {
return console.log(err);
}
var result = data.replace(/string to be replaced/g, 'replacement');
fs.writeFile(someFile, result, 'utf8', function (err) {
...
What does flushing the buffer mean?
...
Thanks. one more thing. Reading cin flushes cout. Does this "reading cin" mean when the user inputs something or when the user is prompted to enter something?
– Mohamed Ahmed Nabil
Feb 23 '13 at 16:50
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What are OLTP and OLAP. What is the difference between them?
...
Let's think of a hard drive as a really wide sheet of paper, where we can read and write things. There are two ways to organize our reads and writes so that they can be efficient and fast.
One way is to make a book that is a bit like a phone book. On each page of the book, we store the information...