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String concatenation in Ruby
...he given object to str. If the object is a Fixnum between 0 and 255, it is converted to a character before concatenation.
so difference is in what becomes to first operand (<< makes changes in place, + returns new string so it is memory heavier) and what will be if first operand is Fixnum (&l...
How to print out the method name and line number and conditionally disable NSLog?
..., ##__VA_ARGS__); debug_separator();
/// /// /// ////// ///// Debug Print Macros
#ifdef DEBUG_SHOWFULLINFO
#define debug(args,...) debugExt(args, ##__VA_ARGS__);
#else
#ifdef DEBUG_SHOWLINES
#define debug(args,...) debug_showSeparators(); NSLog([ NSString st...
How to Truncate a string in PHP to the word closest to a certain number of characters?
...ematurely cutting the text if it contains a newline before the actual cutpoint. Here a version which solves this problem:
function tokenTruncate($string, $your_desired_width) {
$parts = preg_split('/([\s\n\r]+)/', $string, null, PREG_SPLIT_DELIM_CAPTURE);
$parts_count = count($parts);
$lengt...
Java Delegates?
... get Method objects you can then invoke, and the other way is to create an interface with a single 'invoke' or 'execute' method, and then instantiate them to call the method your interested in (i.e. using an anonymous inner class).
You might also find this article interesting / useful : A Java Prog...
Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
...ea of using numpy.nan to represent missing values is something that pandas introduced, which is why pandas has the tools to deal with it.
Datetimes too (if you use pd.NaT you won't need to specify the dtype)
In [24]: s = Series([Timestamp('20130101'),np.nan,Timestamp('20130102 9:30')],dtype='M8[ns...
The best way to remove duplicate values from NSMutableArray in Objective-C?
... *orderedSet = [NSOrderedSet orderedSetWithArray:yourArray];
You can now convert it back to a unique NSArray
NSArray *uniqueArray = orderedSet.array;
Or just use the orderedSet because it has the same methods like an NSArray like objectAtIndex:, firstObject and so on.
A membership check with c...
Can I change all my http:// links to just //?
...
I'm finding that IE6 attempts to convert the URI to a relative one (i.e. removing one of the leading slashes). This is in a link element. For example, when specifying //fonts.googleapis.com/css?family=Rokkitt:400,700, IE6 tries to load http://mysite.com/font...
java.net.SocketException: Connection reset
...getting the following error trying to read from a socket. I'm doing a readInt() on that InputStream , and I am getting this error. Perusing the documentation this suggests that the client part of the connection closed the connection. In this scenario, I am the server.
...
How to set default font family for entire Android app
...s TextView {
public YourTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
public YourTextView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public YourTextView(Cont...
if A vs if A is not None:
...g and the built-in operation bool(); should return False or True, or their integer equivalents 0 or 1. When this method is not defined, __len__() is called, if it is defined, and the object is considered true if its result is nonzero. If a class defines neither __len__() nor __nonzero__(), all its i...