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Check if array is empty or null
...
As long as your selector is actually working, I see nothing wrong with your code that checks the length of the array. That should do what you want. There are a lot of ways to clean up your code to be simpler and more readable. Here's a cleaned up version...
Oracle “Partition By” Keyword
...
+--------------+---------------+
2) The boss says "Now get me a list of all items, with their brand AND number of items that the respective brand has"
You may try:
SELECT
ITEM_NR
,BRAND
,COUNT(ITEM_ID)
FROM
ITEMS
GROUP BY
BRAND;
But you get:
ORA-00979: no...
Java equivalent of C#'s verbatim strings with @
...d thanks. the fact that its a 'filename' in my case in kind of irrelevant. All my code is doing is taking a string (or trying to) and passing it on. I don't actually do anything with it other than pass it on to a web service. I was testing the response from a c# WCF service being called from Java. A...
How to get IP address of the device from code?
...aos.toByteArray(), "UTF-8") : new String(baos.toByteArray());
} finally {
try{ is.close(); } catch(Exception ignored){}
}
}
/**
* Returns MAC address of the given interface name.
* @param interfaceName eth0, wlan0 or NULL=use first interface
* @r...
Clone contents of a GitHub repository (without the folder itself)
...n GitHub . When I git clone (git@github:me/name.git...) I get a folder called name/ and inside name I have my contents... How do I get JUST the contents?
...
Error in : object of type 'closure' is not subsettable
I was finally able to work out the code for my scraping . It seemed to be working fine and then all of a sudden when I ran it again, I got the following error message:
...
What Are Some Good .NET Profilers?
...te basic memory profiling.
dotTrace integrates with Resharper, which is really convenient, as you can profile the performance of a unit test with one click from the IDE. However, dotTrace often seems to give spurious results (e.g. saying that a method took several years to run)
I prefer the way th...
Checking oracle sid and database name
...s, you can also use ORA_DATABASE_NAME.
It might be worth noting that not all of the methods give you the same output:
SQL> select sys_context('userenv','db_name') from dual;
SYS_CONTEXT('USERENV','DB_NAME')
--------------------------------------------------------------------------------
orcl
...
How to print color in console using System.out.println?
...rts it, you can use ANSI escape codes to use color in your output. It generally works for Unix shell prompts; however, it doesn't work for Windows Command Prompt (Although, it does work for Cygwin). For example, you could define constants like these for the colors:
public static final String ANSI_R...
Character reading from file in Python
... print repr(line)
It's also possible to open files in update mode, allowing both reading and writing:
with codecs.open('test', encoding='utf-8', mode='w+') as f:
f.write(u'\u4500 blah blah blah\n')
f.seek(0)
print repr(f.readline()[:1])
EDIT: I'm assuming that your intended go...