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NSUserDefaults - How to tell if a key exists
...alue is nil:
if([[NSUserDefaults standardUserDefaults] objectForKey:@"YOUR_KEY"] != nil) {
...
}
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Eclipse Workspaces: What for and why?
...and group the projects' sub-projects inside of it:
/projects/proj1/subproj1_1
/projects/proj1/subproj1_2
/projects/proj2/subproj2_1
Create a separate folder for your workspaces:
/eclipse-workspaces
Create workspaces for your projects:
/eclipse-workspaces/proj1
/eclipse-workspaces/proj2
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How to fix java.net.SocketException: Broken pipe?
... In the following case, I create a Socket server that listen at TCP port 10_000 and accept max 200 pending sockets.
new Thread(() -> {
try (ServerSocket serverSocket = new ServerSocket(10_000, 200)) {
logger.info("Server starts listening on TCP port {}", port);
while (true...
Disable Browser Link - which toolbar
...ble visual studios browser link. I found this question:
How can I disable __vwd/js/artery in VS.NET 2013?
and many other resources saying I should untick "Enable Browser Link" in the toolbar, but that toolbar doesn't show up in my visual studio. I've enabled all the debug toolbars but still no br...
How do I force a DIV block to extend to the bottom of a page even if it has no content?
...
This site has some excellent examples:
http://www.brunildo.org/test/html_body_0.html
http://www.brunildo.org/test/html_body_11b.html
http://www.brunildo.org/test/index.html
I also recommend going to http://quirksmode.org/
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Java: int array initializes with nonzero elements
...bug will be fixed.
There is only advice at the moment: do not use JDK1.7.0_04 or later if you depend on JLS for newly declared arrays.
Update at October 5:
In the new Build 10 of the JDK 7u10 (early access) released at October 04, 2012, this bug was fixed at least for Linux OS (I did not test for...
Rotating a two-dimensional array in Python
... [4, 5, 6],
[7, 8, 9]
]
def rotated(array_2d):
list_of_tuples = zip(*array_2d[::-1])
return [list(elem) for elem in list_of_tuples]
# return map(list, list_of_tuples)
print(list(rotated(original)))
# [[7, 4, 1], [8, 5, 2], [9, 6, 3]]
The list comp or...
Rails 4: before_filter vs. before_action
In rails >4.0.0 generators creates CRUD operations with before_action not before_filter . It seems to do the same thing. So what's the difference between these two?
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difference between fork and branch on github
... @Jonathan: as loose or packed objects, see book.git-scm.com/7_how_git_stores_objects.html (objects being a blob (your "files"), a tree, a commit or a tag: book.git-scm.com/1_the_git_object_model.html )
– VonC
Feb 15 '11 at 21:50
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Android Writing Logs to text File
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Don't forget to add permission for writing_external_storage in Manifest!
– virusss8
Jan 18 '12 at 20:16
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