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Fastest way to determine if an integer's square root is an integer
...04040 computed below
{
for (int i=0; i<64; ++i) goodMask |= Long.MIN_VALUE >>> (i*i);
}
public boolean isSquare(long x) {
// This tests if the 6 least significant bits are right.
// Moving the to be tested bit to the highest position saves us masking.
if (goodMask <&l...
passing argument to DialogFragment
...
See the full example here
http://developer.android.com/reference/android/app/DialogFragment.html
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Are PHP Variables passed by value or by reference?
...;) to the argument name in the function definition.
<?php
function add_some_extra(&$string)
{
$string .= 'and something extra.';
}
$str = 'This is a string, ';
add_some_extra($str);
echo $str; // outputs 'This is a string, and something extra.'
?>
...
RSpec: What is the difference between a feature and a request spec?
...e Capybara comes in. A request spec is still testing the behavior of your application and doesn't have the expectation of readability that an acceptance test would have. So, feature is there for the improved syntax for acceptance tests.
Technical differences include request specs wrap Rails integ...
Sign APK without putting keystore info in build.gradle
...oject 'RootProjectName' where line 24 is the one with the if-block. Adding apply plugin: 'com.android.application' to the root build.gradle also lets the build fail. What am I doing wrong?
– PhilLab
Mar 9 '15 at 13:32
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How to detect current state within directive
...
<li ui-sref-active="active" class="item">
<a href ui-sref="app.user({user: 'bilbobaggins'})">@bilbobaggins</a>
</li>
<!-- ... -->
</ul>
Or filters:
"stateName" | isState & "stateName" | includedByState
...
What exactly does git's “rebase --preserve-merges” do (and why?)
...B --not $(git merge-base --all A B)
Replay the commits:
Create a branch B_new, on which to replay our commits.
Switch to B_new (i.e. "git checkout B_new")
Proceeding parents-before-children (--topo-order), replay each commit c in C on top of B_new:
If it's a non-merge commit, cherry-pick a...
Are Swift variables atomic?
..., strong) id engine;
@property (atomic, strong) id driver;
@end
Uses objc_storeStrong and objc_setProperty_atomic for nonatomic and atomic respectively, where
class SwiftCar {
var engine : AnyObject?
init() {
}
}
uses swift_retain from libswift_stdlib_core and, apparently, does ...
org.hibernate.MappingException: Could not determine type for: java.util.List, at table: College, for
... field instead of getter property
@OneToMany(targetEntity=Student.class, mappedBy="college", fetch=FetchType.EAGER)
private List<Student> students;
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Render a string in HTML and preserve spaces and linebreaks
I have an MVC3 app that has a details page. As part of that I have a description (retrieved from a db) that has spaces and new lines. When it is rendered the new lines and spaces are ignored by the html. I would like to encode those spaces and new lines so that they aren't ignored.
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