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How to check if a specific key is present in a hash or not?
... Nice reference to that change request and subsequent response from Matz.
– Joshua Pinter
Sep 10 '15 at 12:20
...
How can I reconcile detached HEAD with master/origin?
...mmit that was most recently processed by the rebase operation.
To recover from your situation, you should create a branch that points to the commit currently pointed to by your detached HEAD:
git branch temp
git checkout temp
(these two commands can be abbreviated as git checkout -b temp)
This ...
Differences between hard real-time, soft real-time, and firm real-time?
... failing to meet a single deadline.
For a fair example of hard real-time, from the page you linked:
Early video game systems such as the Atari 2600 and Cinematronics vector graphics had hard real-time requirements because of the nature of the graphics and timing hardware.
If something in the ...
Right align text in android TextView
...
In general, android:gravity="right" is different from android:layout_gravity="right".
The first one affects the position of the text itself within the View, so if you want it to be right-aligned, then layout_width= should be either "fill_parent" or "match_parent".
The se...
what is the difference between OLE DB and ODBC data sources?
... (excellent diagram here), he says precisely what MOZILLA said.
(directly from page 7 of that book)
ODBC provides access only to relational databases
OLE DB provides the following features
Access to data regardless of its format or location
Full access to ODBC data sources and OD...
Why can't I use switch statement on a String?
...switch(String) is that it wouldn't meet the performance guarantees expects from switch() statements. They didn't want to "mislead" developers. Frankly I don't think they should guarantee the performance of switch() to begin with.
– Gili
Dec 22 '08 at 22:15
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jquery UI dialog: how to initialize without a title bar?
...think that the best solution is to use the option dialogClass.
An extract from jquery UI docs:
during init : $('.selector').dialog({ dialogClass: 'noTitleStuff' });
or if you want after init. :
$('.selector').dialog('option', 'dialogClass', 'noTitleStuff');
So i created some dialog with o...
Why does C++ compilation take so long?
...e in your program.
In C++, vector<int> is a completely separate type from vector<float>, and each one will have to be compiled separately.
Add to this that templates make up a full Turing-complete "sub-language" that the compiler has to interpret,
and this can become ridiculously compli...
Execute the setInterval function without delay the first time
...ly call clearInterval which means you have to remember the handle returned from the original setInterval call.
So an alternative method is to have foo trigger itself for subsequent calls using setTimeout instead:
function foo() {
// do stuff
// ...
// and schedule a repeat
setTimeout(...
How do I define and use an ENUM in Objective-C?
...about it here: http://nshipster.com/ns_enum-ns_options/
Here's an example from my own code using NS_OPTIONS, I have an utility that sets a sublayer (CALayer) on a UIView's layer to create a border.
The h. file:
typedef NS_OPTIONS(NSUInteger, BSTCMBorder) {
BSTCMBOrderNoBorder = 0,
BST...