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“unrecognized selector sent to instance” error in Objective-C
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It looks like you're not memory managing the view controller properly and it is being deallocated at some point - which causes the numberButtonClicked: method to be sent to another object that is now occupying the memory that the view controller was ...
How to check if an intent can be handled from some activity?
I have this method so far , but it came up like something is missing
6 Answers
6
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How to create id with AUTO_INCREMENT on Oracle?
It appears that there is no concept of AUTO_INCREMENT in Oracle, up until and including version 11g.
16 Answers
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How do I make an http request using cookies on Android?
....HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.cookie.Cookie;
import org.apache.ht...
Oracle SQL: Update a table with data from another table
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This is called a correlated update
UPDATE table1 t1
SET (name, desc) = (SELECT t2.name, t2.desc
FROM table2 t2
WHERE t1.id = t2.id)
WHERE EXISTS (
SELECT 1
FROM table2 t2
WHERE t1.id = t2.id )
Assuming the join result...
FileNotFoundException while getting the InputStream object from HttpURLConnection
...int status = con.getResponseCode();
All available status codes and their meaning are available in the HTTP spec, as linked before. The webservice itself should also come along with some documentation which overviews all status codes supported by the webservice and their special meaning, if any.
I...
Install autoreconf on OS X v10.7 (Lion)?
I'm attempting to re-install Ruby 1.9.3 with a patch that will allow me to use ruby-debug .
6 Answers
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Unable to install R package in Ubuntu 11.04 [closed]
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The install.packages method
You need to install the ubuntu package libxml2-dev So in a shell prompt type:
sudo apt-get update
sudo apt-get install libxml2-dev
You will need special sudo powers for this.
Ubuntu package method
As Richie and D...
Pass column name in data.table using variable [duplicate]
In following example, I am creating a data table having column name ‘x’ and ‘v’
1 Answer
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【iOS】有关苹果iOS App的一些进展、BluetoothLE蓝牙拓展等 - App Inventor...
...no are you using? One challenge here is that Apple has restricted access somewhat to what I would call "classic" Bluetooth due to energy consumption concerns. They do allow use of Bluetooth low energy without issue, which we do plan to implement full support for. Knowing what kind of Ardui...