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How can I programmatically get the MAC address of an iphone
...dl.h>
...
- (NSString *)getMacAddress
{
int mgmtInfoBase[6];
char *msgBuffer = NULL;
size_t length;
unsigned char macAddress[6];
struct if_msghdr *interfaceMsgStruct;
struct sockaddr_dl *socketStruct;
NSString *error...
How and where are Annotations used in Java?
...or areas that we can use Annotations? Is the feature a replacement for XML based configuration?
15 Answers
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Way to get number of digits in an int?
...
Your String-based solution is perfectly OK, there is nothing "un-neat" about it. You have to realize that mathematically, numbers don't have a length, nor do they have digits. Length and digits are both properties of a physical represent...
How can I add a key/value pair to a JavaScript object?
...re.
_.merge (Lodash only)
The second object will overwrite or add to the base object.
undefined values are not copied.
var obj = {key1: "value1", key2: "value2"};
var obj2 = {key2:"value4", key3: "value3", key4: undefined};
_.merge(obj, obj2);
console.log(obj);
// → {key1: "value1", key2: "valu...
Why do indexes in XPath start with 1 and not 0?
...ng about our experience with VBScript with its odd features such as 1-based index instead of 0-based indexes like almost every other language has, the reasoning being that it was a language for users (e.g. Excel VBA) instead of a language for developers.
...
What are the differences between double-dot “..” and triple-dot “…” in Git diff commit ranges?
...ht side in the illustration below:
git diff foo...bar
git diff $(git merge-base foo bar) bar # same thing as above
In other words, git diff foo..bar is exactly the same as git diff foo bar; both will show you the difference between the tips of the two branches foo and bar. On the other hand, git...
How to force the browser to reload cached CSS/JS files?
...Now, we write the following PHP function:
/**
* Given a file, i.e. /css/base.css, replaces it with a string containing the
* file's mtime, i.e. /css/base.1221534296.css.
*
* @param $file The file to be loaded. Must be an absolute path (i.e.
* starting with slash).
*/
fun...
Executing multiple commands from a Windows cmd script
...
@TheM Windows distinguishes between GUI-based and command-based applications (there is a flag in near the beginning of the EXE file). If you start a GUI-based application from the command line it always appears to end immediately since it is completely detached fro...
Implements vs extends: When to use? What's the difference?
...ments used for implementing an interface and extends used for extension of base class behaviour or abstract class.
extends: A derived class can extend a base class. You may redefine the behaviour of an established relation. Derived class "is a" base class type
implements: You are implementing a c...
How to get request URI without context path?
... return null), then your best bet is to substring the request URI yourself based on the context path's length using the usual String method:
HttpServletRequest request = (HttpServletRequest) req;
String path = request.getRequestURI().substring(request.getContextPath().length());
// ...
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