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How do I remove a big file wrongly committed in git [duplicate]
...do it using the git filter-branch command, like this :
git filter-branch --index-filter "git rm -rf --cached --ignore-unmatch path_to_file" HEAD
You can find more documentation here http://dalibornasevic.com/posts/2-permanently-remove-files-and-folders-from-a-git-repository
...
How to change default timezone for Active Record in Rails?
...
I have decided to compile this answer because all others seem to be incomplete.
config.active_record.default_timezone determines whether to use Time.local (if set to :local) or Time.utc (if set to :utc) when pulling dates and times from the database. The default is :...
LINQ equivalent of foreach for IEnumerable
... doesn't - the anonymous function taken by Linq functions can also take an index as a parameter, whereas with foreach you must rebuild the classic for (int i..) construct. And functional languages have to allow iteration that has side effects - otherwise you could never do one iota of work with t...
The Guava library: What are its most useful and/or hidden features? [closed]
...s great for building Comparators that behave just how you want.
Maps.uniqueIndex and Multimaps.index: these methods take an Iterable and a Function and build an ImmutableMap or ImmutableListMultimap that indexes the values in the Iterable by the result of applying the function to each. So with a fu...
Performing Breadth First Search recursively
... Nice. I overlooked the fact that we are dealing with a binary tree. The indexes can be assigned using a DFS. BTW, you forgot a return false at the first case.
– sisis
Mar 31 '10 at 1:33
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How can I automate the “generate scripts” task in SQL Server Management Studio 2008?
... 2012? I'd just be happy if the wizard remembered my settings like "Script Indexes".
– PeterX
Mar 6 '14 at 7:06
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Heap vs Binary Search Tree (BST)
...ust start from the top
In a binary heap, increasing the value at a given index is also O(1) for the same reason. But if you want to do that, it is likely that you will want to keep an extra index up-to-date on heap operations How to implement O(logn) decrease-key operation for min-heap based Prior...
Store images in a MongoDB database
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GridFS is for documents > 16MB. Not all binary data is this large. Other than being able to surpass that limit, is there any other benefits to using GridFS instead of just the BinData type?
– Brandon Fitzpatrick
Jan 29 '1...
How to implement the activity stream in a social network
...hat the activity relates to a book (type) with a given primary key (id)
I index on (user_id, time) and query for activities that are user_id IN (...friends...) AND time > some-cutoff-point. Ditching the id and choosing a different clustered index might be a good idea - I haven't experimented wi...
Git 工具 - 子模块(submodule)：一个仓库包含另一个仓库 - 开源 & Github -...
...DbConnector
diff --git a/DbConnector b/DbConnector
new file mode 160000
index 0000000..c3f01dc
--- /dev/null
+++ b/DbConnector
@@ -0,0 +1 @@
+Subproject commit c3f01dc8862123d317dd46284b05b6892c7b29bc
虽然 DbConnector 是工作目录中的一个子目录，但 Git 还是会将它视...