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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...
What is in your Mathematica tool bag? [closed]
... an application of Reap and Sow which mimics/extends the behavior of GatherBy:
SelectEquivalents[x_List,f_:Identity, g_:Identity, h_:(#2&)]:=
Reap[Sow[g[#],{f[#]}]&/@x, _, h][[2]];
This allows me to group lists by any criteria and transform them in the process. The way it works is tha...
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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How can I list (ls) the 5 last modified files in a directory?
I know ls -t will list all files by modified time. But how can I limit these results to only the last n files?
5 Answe...
Looking for a clear definition of what a “tokenizer”, “parser” and...
...
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...
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.
...
Why should C++ programmers minimize use of 'new'?
...struct called a destructor. This mechanism allows you to manage resources by aligning the lifetime of the resource with the lifetime of a variable. This technique is called RAII and is the distinguishing point of C++. It "wraps" resources into objects. std::string is a perfect example. This snipp...
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
// ...