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What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
...he published specification goes into in detail.
Much of the new behavior, based on keeping objects around as long as there is a strong pointer to them, is very similar to garbage collection on the Mac. However, the technical underpinnings are very different. Rather than having a garbage collector...
Spring Data: “delete by” is supported?
I am using Spring JPA for database access. I am able to find examples such as findByName and countByName, for which I dont have to write any method implementation. I am hoping to find examples for delete a group of records based on some condition.
...
Java to Clojure rewrite
...lop data access routines that can persist these structures to/from the database or network or legacy Java code as needed. The reason to keep this very separate is that you don't want persistence logic tied up with your "business logic" functions. You might want to look at ClojureQL for this, though ...
Rename specific column(s) in pandas
...is argument was introduced in v0.21.
Index.str.replace() for string/regex based replacement.
If you need to rename ALL columns at once,
DataFrame.set_axis() method with axis=1. Pass a list-like sequence. Options are available for in-place modification as well.
rename with axis=1
df = pd.DataFr...
Do on-demand Mac OS X cloud services exist, comparable to Amazon's EC2 on-demand instances? [closed]
...their is a pay as you go plan at $1/hr. I'd probably go with pay as you go based on my usage. The pay as you go is based on prepaid credits (1 credit = 1 hour, billed at 30 credit increments). One caveat is that you need to periodically use the plan at least once every 60 days for the pay as you go ...
Two inline-block, width 50% elements wrap to second line [duplicate]
...major browsers, it's been tried and tested in a number of complex viewport-based web applications.
<style>
.container {
font-size: 0;
}
.ie7 .column {
font-size: 16px;
display: inline;
zoom: 1;
}
.ie8 .column {
font-size:16px;
...
gradle build fails on lint task
...took the inspiration from
https://android.googlesource.com/platform/tools/base/+/e6a5b9c7c1bca4da402de442315b5ff1ada819c7
(implementation:
https://android.googlesource.com/platform/tools/base/+/e6a5b9c7c1bca4da402de442315b5ff1ada819c7/build-system/gradle/src/main/groovy/com/android/build/gradle/...
Why, Fatal error: Class 'PHPUnit_Framework_TestCase' not found in …?
...troduced a breaking change that
// removed PHPUnit_Framework_TestCase as a base class,
// and replaced it with \PHPUnit\Framework\TestCase
if (!class_exists('\PHPUnit_Framework_TestCase') && class_exists('\PHPUnit\Framework\TestCase'))
class_alias('\PHPUnit\Framework\TestCase', '\PHPUnit...
How do I find Waldo with Mathematica?
... into a format that the classification algorithm could learn from. A block-based decomposition that assesses all subsections of the image would also be required ... but this is made easier by the fact that Waldo is a) always roughly the same size and b) always present exactly once in each image.
Obt...
WPF and initial focus
...
Based on the accepted answer implemented as an attached behavior:
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
namespace UI.Behaviors
{
public static class FocusBehavior
{
...