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Objective-C: Where to remove observer for NSNotification?
...ly hard to give general advice as to when it's best to remove the observer from the notification center, because that depends:
On your use case (Which notifications are observed? When do they get send?)
The implementation of the observer (When is it ready to receive notifications? When is it no lo...
ElasticSearch, Sphinx, Lucene, Solr, Xapian. Which fits for which usage? [closed]
... SET NAMES utf8
# query before fetching rows to index
sql_query = SELECT *, id AS pid, CRC32(safetag) as safetag_crc32 FROM hb_posts
sql_attr_uint = pid
# pid (as 'sql_attr_uint') is necessary for sphinx
# this field must be unique
# that is why I like sphinx
# you ...
Manually put files to Android emulator SD card
... Card through the Android Perspective (it is called DDMS in Eclipse). Just select the Emulator in the left part of the screen and then choose the File Explorer tab. Above the list with your files should be two symbols, one with an arrow pointing at a phone, clicking this will allow you to choose a f...
Check if OneToOneField is None in Django
...fortunately, this doesn't work all the time. In case you want to work with select_related() now or in the future -- or maybe even to be sure you also handle other sorts of magic which may happen elsewhere -- you have to extend the test as follows: if hasattr(object, 'onetoonerevrelattr') and object....
Text Progress Bar in the Console [closed]
I wrote a simple console app to upload and download files from an FTP server using the ftplib.
31 Answers
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How can I programmatically get the MAC address of an iphone
...than the actual MAC
Somthing I stumbled across a while ago. Originally from here I modified it a bit and cleaned things up.
IPAddress.h
IPAddress.c
And to use it
InitAddresses();
GetIPAddresses();
GetHWAddresses();
int i;
NSString *deviceIP = nil;
for (i=0; i<MAXADDRS; ++i)
{
static u...
What is the difference between exit and return? [duplicate]
... difference between return and exit statement in C programming when called from anywhere in a C program?
4 Answers
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Two single-column indexes vs one two-column index in MySQL?
... the statement I provided.
Additionally, MySQL can only use one index per SELECT so a covering index would be the best means of optimizing your queries.
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How to format code in Xcode? [duplicate]
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Select first the text you want to format and then press Ctrl+I.
Use Cmd+A first if you wish to format all text in the selected file.
Note: this procedure only re-indents the lines, it does not do any advanced formatting.
In ...
Create a Path from String in Java7
How can I create a java.nio.file.Path object from a String object in Java 7?
4 Answers
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