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#define macro for debug printing in C?
...l remove the code when DEBUG is 0.
If you want to work with #ifdef DEBUG, then change the test condition:
#ifdef DEBUG
#define DEBUG_TEST 1
#else
#define DEBUG_TEST 0
#endif
And then use DEBUG_TEST where I used DEBUG.
If you insist on a string literal for the format string (probably a good idea...
How to use a servlet filter in Java to change an incoming servlet request url?
...compose the new path.
Use either ServletRequest#getRequestDispatcher() and then RequestDispatcher#forward() to forward the request/response to the new URL (server-side redirect, not reflected in browser address bar), or cast the incoming ServletResponse to HttpServletResponse and then HttpServletRes...
How to get whole and decimal part of a number?
...$n = 1.25;
$whole = floor($n); // 1
$fraction = $n - $whole; // .25
Then compare against 1/4, 1/2, 3/4, etc.
In cases of negative numbers, use this:
function NumberBreakdown($number, $returnUnsigned = false)
{
$negative = 1;
if ($number < 0)
{
$negative = -1;
$number *= -...
What requests do browsers' “F5” and “Ctrl + F5” refreshes generate?
... 2 available, i understand that hitting ctrl+f5 will make me see version2. Then i close my browser and open that page again, ¿do i see version 1 or i still see version2? Thanks.
– molerus
Jan 18 '17 at 7:50
...
Condition within JOIN or WHERE
...s is when you want to see only the records in one table but not the other. Then you use the where clause for the condition not the join.
SELECT *
FROM dbo.Customers AS CUS
LEFT JOIN dbo.Orders AS ORD
ON CUS.CustomerID = ORD.CustomerID
WHERE ORD.OrderID is null
...
send mail from linux terminal in one line [closed]
...commend the latter.
You can install it via your favorite package manager. Then you have to configure it, and once you have done that, you can send email like this:
echo "My message" | mail -s subject user@gmail.com
See the manual for more information.
As far as configuring postfix goes, there'...
Phonegap Cordova installation Windows
...s one can imagine, starting on one page with running a cordova command and then being taken to another page that says use phonegap, or is it the other way?, is very confusing. Oliver, your link is great, the page is very clear. But I almost overlooked the link. I started thinking, "what is an exc...
xkcd style graphs in MATLAB
...at you can create plots and style them using standard MATLAB functions and then when you're done you can then re-render the plot in an xkcd style while preserving the overall style of the plot.
Examples
Plot
Bar & Plot
Box & Plot
How it works
The function works by iterating over th...
NodeJS - What does “socket hang up” actually mean?
...you, as a server, perhaps a proxy server, receive a request from a client, then start acting upon it (or relay the request to the upstream server), and before you have prepared the response, the client decides to cancel/abort the request.
This stack trace shows what happens when a client cancels th...
File Explorer in Android Studio
..., to the left of the help icon). From the ADM, select the device/emulator, then select the File Explorer tab.
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