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What happens to a declared, uninitialized variable in C? Does it have a value?
...ardless of what standards say, in real life, each stack page actually does start off as zero, but when your program looks at any auto storage class values, it sees whatever was left behind by your own program when it last used those stack addresses. If you allocate a lot of auto arrays you will see ...
Create array of regex matches
...]"), "abracadabra")) {
System.out.println(match.group() + " at " + match.start());
}
yields
a at 0
b at 1
a at 3
c at 4
a at 5
a at 7
b at 8
a at 10
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...
Breadth First Vs Depth First
...pth-first search algorithm acts as if it wants to get as far away
from the starting point as quickly as possible.
It generally uses a Stack to remember where it should go when it reaches a dead end.
Rules to follow: Push first vertex A on to the Stack
If possible, visit an adjacent unvisited verte...
Difference between application/x-javascript and text/javascript content types
...bsolete and application/x-javascript was experimental). Worse, it left the start of the answer incoherent, with a block saying text/javascript just hanging out irrelevantly at the top of the answer for no obvious reason.
– Mark Amery
Aug 4 '15 at 13:52
...
How does a hash table work?
...e library and a lot of work when you fill up the library.
Instead of just starting to fill up the library from one end to the other, you devise a clever little method. You take the title of the book, run it through a small computer program, which spits out a shelf number and a slot number on that s...
Can you explain the HttpURLConnection connection process?
...very simple timing code around the entire connection block, like so:
long start = System.currentTimeMillis();
log.info("Time so far = " + new Long(System.currentTimeMillis() - start) );
// run the above example code here
log.info("Total time to send/receive data = " + new Long(System.currentTimeMi...
Drawing an SVG file on a HTML5 canvas
...rializeToString(svg);
// make it base64
var svg64 = btoa(xml);
var b64Start = 'data:image/svg+xml;base64,';
// prepend a "header"
var image64 = b64Start + svg64;
// set it as the source of the img element
img.onload = function() {
// draw the image onto the canvas
canvas.getCo...
Debugging sqlite database on the device
...
I'll repeat myself from another answer:
Starting from API level 8 (Android 2.2), if you build the application as debuggable, you can use the shell run-as command to run a command or executable as a specific user/application or just switch to the UID of your applica...
MFC Grid control 2.27 - C/C++ - 清泛网 - 专注IT技能提升
...ated data I decided what was really needed was a dedicated grid control. I started writing my own grid control from scratch but decided to save time by modifying Joe Willcoxson's free WorldCom grid control at http://users.aol.com/chinajoe/wcmfclib.html. I tore apart his code and rebuilt it from the ...
MFC Grid control 2.27 - C/C++ - 清泛网 - 专注IT技能提升
...ated data I decided what was really needed was a dedicated grid control. I started writing my own grid control from scratch but decided to save time by modifying Joe Willcoxson's free WorldCom grid control at http://users.aol.com/chinajoe/wcmfclib.html. I tore apart his code and rebuilt it from the ...