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What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
...ice versa. This means that control needs to be transferred back and forth from ARC when bridging between CF types and Objective-C. Some keywords related to this bridging have been added, and Mike Ash has a great description of various bridging cases in his lengthy ARC writeup.
In addition to this,...
Segmentation fault on large array sizes
...at the disasseble you will see the size of your local variables subtracted from the stack pointer. When you call malloc or calloc or any of the memory fuctions the fuctions go and find blocks of memory large enough to sataisfy your reqest.
– rerun
Dec 4 '09 at...
Pandas dataframe get first row of each group
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suppose that counting from the top you want to get row number top_n, then dx = df.groupby('id').head(top_n).reset_index(drop=True) and suppose that counting from the bottom you want to get row number bottom_n, then dx = df.groupby('id').tail(bott...
Django : How can I see a list of urlpatterns?
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All I get from that is TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'
– Paul Tomblin
Dec 13 '13 at 20:04
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Difference between case object and object
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Case classes differ from regular classes in that they get:
pattern matching support
default implementations of equals and hashCode
default implementations of serialization
a prettier default implementation of toString, and
the small amount of...
java.net.UnknownHostException: Invalid hostname for server: local
... "localhost" instead, or perhaps 127.0.0.1 or ::1 (the last one is IPv6).
From the javadocs:
Thrown to indicate that the IP address
of a host could not be determined.
127.0.0.1or ::1 or "localhost" should always be the loopback interface, so if that doesn't work I'd be really surprised.
If...
How do I run IDEA IntelliJ on Mac OS X with JDK 7?
... variables that work fine in Terminal, other applications that you run not from the Terminal will not see these variables. A workaround for this problem is to start the application directly from the Terminal, for IDEA the following command can be used:
open -a /Applications/IntelliJ\ IDEA\ 12.app/
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Reading a file line by line in Go
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From the docs: "ReadLine is a low-level line-reading primitive. Most callers should use ReadBytes('\n') or ReadString('\n') instead or use a Scanner."
– mdwhatcott
Mar 18 '14 at 23:20
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How can I wait for set of asynchronous callback functions?
.... Let's say you have 10 ajax calls and you want to accumulate the results from those 10 ajax calls and then when they have all completed you want to do something. You can do it like this by accumulating the data in an array and keeping track of when the last one has finished:
Manual Counter
var ...
dyld: Library not loaded … Reason: Image not found
...tuff automatically when building an app. It will package up all libraries from /usr/local or /opt/local into the app bundle and fix references to those libraries to use @rpath. This means you can easily install third-party library using Homebrew and package them just as easily.
I have now made th...