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What's the difference between the data structure Tree and Graph?
...ented very compactly in an array; there are other succinct representations etc. etc.), but probably the most popular and useful way to represent them is using a recursive pointer-based structure. The representation is not unique for unrooted trees, but that is immaterial.
– j_...
htaccess Access-Control-Allow-Origin
... headers
of course after any changes in Apache you have to restart it:
/etc/init.d/apache2 restart
Then you can use
<IfModule mod_headers.c>
Header set Access-Control-Allow-Origin "*"
</IfModule>
And if mod_headers is not active, this line will do nothing at all. You can try ...
Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...of-memory condition (dup_mm, dup_task_struct, alloc_pid, mpol_dup, mm_init etc. croak), or because security_vm_enough_memory_mm failed you while enforcing the overcommit policy.
Start by checking the vmsize of the process that failed to fork, at the time of the fork attempt, and then compare to the...
what's the difference between “hadoop fs” shell commands and “hdfs dfs” shell commands?
...a generic file system which can point to any file systems like local, HDFS etc. So this can be used when you are dealing with different file systems such as Local FS, (S)FTP, S3, and others
hadoop dfs <args>
dfs is very specific to HDFS. would work for operation relates to HDFS. This ha...
How to enable curl, installed Ubuntu LAMP stack?
... should restart the web server with one of the following commands,
sudo /etc/init.d/apache2 restart OR sudo service apache2 restart
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Default implementation for Object.GetHashCode()
... for GetHashCode() work? And does it handle structures, classes, arrays, etc. efficiently and well enough?
6 Answers
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How do I find the location of the executable in C? [duplicate]
...e path, ie, it contains a /, determine the current working directory with getcwd() and then append argv[0] to it.
If argv[0] is a plain word, search $PATH looking for argv[0], and append argv[0] to whatever directory you find it in.
Note that all of these can be circumvented by the process which i...
Understanding Magento Block and Block Type
...age is short for Mage_Page_Block (it is defined in app/code/core/Mage/Page/etc/config.xml if you want to see).
The B is the class name relative to the alias, initial letters of each word are capitalised. In this case html becomes Html and is appended to the resolved alias, so it is Mage_Page_Block_...
Center content of UIScrollView when smaller
... more jerky than using Liam's NYOBetterZoom. Maybe it depend on image size etc. The moral; use the solution that best suits your needs
– wuf810
Apr 15 '11 at 10:36
2
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Why use apparently meaningless do-while and if-else statements in macros?
...ive in the real world. Unless we can guarantee that all the if statements, etc, in our code use braces, then wrapping macros like this is a simple way of avoiding problems.
– Steve Melnikoff
Nov 20 '13 at 17:16
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