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How to create a temporary directory?
...ed on the EXIT signal. That guarantees that the cleanup function is always called, even if the script aborts somewhere.
#!/bin/bash
# the directory of the script
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
# the temp directory used, within $DIR
# omit the -p parameter to c...
DateTime vs DateTimeOffset
...s calendar, and there are many different calendars all over the globe. We call these calendars time zones. Calendar time is represented by a DateTime where .Kind is DateTimeKind.Unspecified, or DateTimeKind.Local. And .Local is only meaningful in scenarios where you have an implied understanding ...
What does “atomic” mean in programming?
... public int m2() { return i; }
}
you have the guarantee that any thread calling m2 will either read 0 or 5.
On the other hand, with this code (where i is a long):
class SomeClass {
private long i = 0;
public void m1() { i = 1234567890L; }
public long m2() { return i; }
}
a thread...
Android custom dropdown/popup menu
...
Update: To create a popup menu in android with Kotlin refer my answer here.
To create a popup menu in android with Java:
Create a layout file activity_main.xml under res/layout directory which contains only one button.
Filename: activity_main.xml
<RelativeL...
How do I delete from multiple tables using INNER JOIN in SQL server
...e in this example. Something like:
begin transaction;
declare @deletedIds table ( id int );
delete from t1
output deleted.id into @deletedIds
from table1 as t1
inner join table2 as t2
on t2.id = t1.id
inner join table3 as t3
on t3.id = t2.id;
delete from t2
...
Converting XDocument to XmlDocument and vice versa
...
Why does ToXDocument() contain call to MoveToContent()? This looks liek it would skip over any content ahead of the document element, e.g. any comments and processing instructions at the top of the XML doc.
– redcalx
...
Change bundle identifier in Xcode when submitting my first app in IOS
.... I have entered iOS Provisioning Portal and I am about to create an app ID.
11 Answers
...
How to access accelerometer/gyroscope data from Javascript?
...ter registering your event listener (in this case, a JavaScript
function called handleOrientation()), your listener function
periodically gets called with updated orientation data.
The orientation event contains four values:
DeviceOrientationEvent.absolute
DeviceOrientationEvent.a...
View/edit ID3 data for MP3 files
What's a quick and easy way to view and edit ID3 tags (artist, album, etc.) using C#?
6 Answers
...
When should I use a composite index?
...he tables in a query (Exemptions are there. eg, Merging of indexes). Which ideally means that a table in a query, must use a single index for all where-clause, table join, group-by and order-by. So a separate index on each column may not work always but a composite index can do the magic.
...