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'IF' in 'SELECT' statement - choose output value based on column values
...
1039
SELECT id,
IF(type = 'P', amount, amount * -1) as amount
FROM report
See http://dev....
Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
..., take a look at this excellent answer: https://stackoverflow.com/a/11227902/1001643
Compilers typically don't have enough information to know which branches will alias and whether those aliases will be significant. However, that information can be determined at runtime with tools such as Cachegr...
How to set timer in android?
...n extends Activity {
TextView text, text2, text3;
long starttime = 0;
//this posts a message to the main thread from our timertask
//and updates the textfield
final Handler h = new Handler(new Callback() {
@Override
public boolean handleMessage(Message msg) {
...
What is the proper declaration of main?
...ogram. argc is the number of arguments in the argv array.
Usually, argv[0] contains the name of the program, but this is not always the case. argv[argc] is guaranteed to be a null pointer.
Note that since an array type argument (like char*[]) is really just a pointer type argument in disguise, ...
Is there a TRY CATCH command in Bash
... |
edited Feb 19 at 5:20
answered Feb 25 '14 at 9:50
Jay...
What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?
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+50
What is wchar_t?
wchar_t is defined such that any locale's char encoding can be converted to a wchar_t representation where every wch...
Get the generated SQL statement from a SqlCommand object?
...it:
retval = (sp.Value.ToBooleanOrDefault(false)) ? "1" : "0";
break;
default:
retval = sp.Value.ToString().Replace("'", "''");
break;
}
return retval;
}
public static String CommandAsSql(this SqlC...
In a Bash script, how can I exit the entire script if a certain condition occurs?
...
840
Try this statement:
exit 1
Replace 1 with appropriate error codes. See also Exit Codes With S...
jQuery callback for multiple ajax calls
...tions) options = {};
numRequestToComplete = options.numRequest || 0;
requestsCompleted = options.requestsCompleted || 0;
callBacks = [];
var fireCallbacks = function() {
alert("we're all complete");
for (var i = 0; i < callBacks.length; i++...
Add an element to an array in Swift
...o insert a new element into your Array.
anArray.insert("This String", at: 0)
To insert the contents of a different Array into your Array.
anArray.insert(contentsOf: ["Moar", "Strings"], at: 0)
More information can be found in the "Collection Types" chapter of "The Swift Programming Language", ...