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Choosing Java vs Python on Google App Engine
...a seems to have a longer list of libraries and especially support for Java bytecode regardless of the languages used to write that code. Which language will give better performance and more power? Please advise. Thank you!
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Pointer to pointer clarification
... also used in statements to access the contents of the variable pointed at by a pointer (dereferencing operator).
– Lucas A.
Feb 11 '14 at 20:33
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Difference between angle bracket < > and double quotes “ ” while including header files in C++? [dup
...sequence of implementation-defined places for a header identified uniquely by the specified sequence between the < and > delimiters, and causes the replacement of that directive by the entire contents of the header. How the places are specified or the header identified is implementation-define...
git remote prune – didn't show as many pruned branches as I expected
... ran git remote prune origin, you have pruned some branch that was removed by someone else. It's more likely that your co-workers now need to run git prune to get rid of branches you have removed.
So what exactly git remote prune does? Main idea: local branches (not tracking branches) are not tou...
Difference between “read commited” and “repeatable read”
...epeatable read guarantees, it also guarantees that no new data can be seen by a subsequent read.
Say you have a table T with a column C with one row in it, say it has the value '1'. And consider you have a simple task like the following:
BEGIN TRANSACTION;
SELECT * FROM T;
WAITFOR DELAY '00:01:00'...
Twitter Bootstrap modal: How to remove Slide down effect
... The question of how to fade but not drop-down from the top is not covered by this answer.
– Synesso
Sep 28 '13 at 1:15
26
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Django's SuspiciousOperation Invalid HTTP_HOST header
...ly, then it is possible someone is probing your site for the vulnerability by spoofing the header.
There is discussion right now by the Django developers to change this from a 500 internal server error to a 400 response. See this ticket.
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Looking for a clear definition of what a “tokenizer”, “parser” and...
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A tokenizer breaks a stream of text into tokens, usually by looking for whitespace (tabs, spaces, new lines).
A lexer is basically a tokenizer, but it usually attaches extra context to the tokens -- this token is a number, that token is a string literal, this other token is an equ...
GCC dump preprocessor defines
...ocessor defines are dependent on command line options - you can test these by adding the relevant options to the above command line. For example, to see which SSE3/SSE4 options are enabled by default:
$ gcc -dM -E - < /dev/null | grep SSE[34]
#define __SSE3__ 1
#define __SSSE3__ 1
and then com...
How does Duff's device work?
...'s the Wikipedia example with some notations.
Let's say you're copying 20 bytes. The flow control of the program for the first pass is:
int count; // Set to 20
{
int n = (count + 7) / 8; // n is now 3. (The "while" is going
// ...