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In JPA 2, using a CriteriaQuery, how to count results
...onfuse these concepts :-) JPA comes with very powerfull/ complex API that allows you to do multiple joins/ fetches/ aggregations/ aliases etc in a single query. You have to deal with it while counting.
– G. Demecki
Sep 14 '15 at 8:16
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Why is (object)0 == (object)0 different from ((object)0).Equals((object)0)?
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The reason the calls behave different is they bind to very different methods.
The == case will bind to the static reference equality operator. There are 2 independent boxed int values created hence they are not the same reference.
In th...
Why do we have map, fmap and liftM?
Why do we have three different functions that do essentially the same thing?
1 Answer
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Randomize a List
... Shuffle method, which is asking for trouble if the method is going to be called repeatedly. Below is a fixed, full example based on a really useful comment received today from @weston here on SO.
Program.cs:
using System;
using System.Collections.Generic;
using System.Threading;
namespace Simple...
Converting ISO 8601-compliant String to java.util.Date
... hours off UTC, so the string does not necessarily end with ":00".
ISO8601 allows only the number of hours to be included in the time zone, so "+01" is equivalent to "+01:00"
ISO8601 allows the usage of "Z" to indicate UTC instead of "+00:00".
The easier solution is possibly to use the data type c...
How do you rebase the current branch's changes on top of changes being merged in?
...ing branch, and the changes get merged in without rebasing the history at all. If I run git-rebase master , then the changes in master are rebased to be put on the top of my working branch. But what if I want to merge in the changes from master but rebase my changes in working to be on top...
Split string with delimiters in C
...tr + strlen(a_str) - 1);
/* Add space for terminating null string so caller
knows where the list of returned strings ends. */
count++;
result = malloc(sizeof(char*) * count);
if (result)
{
size_t idx = 0;
char* token = strtok(a_str, delim);
whi...
Compare two dates with JavaScript
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@patrick, suggest calling setHours(0,0,0,0) this way. Eliminates the need for calling setMinutes() etc. Also, executes faster.
– Karl
Nov 16 '12 at 21:32
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Cost of exception handlers in Python
...faster than an explicit if as long as the condition is not met.
But it's all within the same order of magnitude and unlikely to matter either way. Only if the condition is actually met, then the if version is significantly faster.
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Why are `private val` and `private final val` different?
... it's a completely different val that just happens to have the same name. (All references to the old one would still refer to the old one.)
– aij
Jan 21 '14 at 2:46
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