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Git - Difference Between 'assume-unchanged' and 'skip-worktree'

...it, git (of course) assumes the files corresponding to that portion of the index have not been modified in the working copy. So it avoids a mess of stat calls. This bit is lost whenever the file's entry in the index changes (so, when the file is changed upstream). skip-worktree is more than that: e...
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Evenly distributing n points on a sphere

...g. Note that above I created an offset of my indices by adding 0.5 to each index. This was just visually appealing to me, but it turns out that the choice of offset matters a lot and is not constant over the interval and can mean getting as much as 8% better accuracy in packing if chosen correctly. ...
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How many Activities vs Fragments?

...ole new activity in which it is displayed. */ void showDetails(int index) { mCurCheckPosition = index; if (mDualPane) { // We can display everything in-place with fragments, so update // the list to highlight the selected item and show the...
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【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...在的话,获取setsockopt配置 if (!ipc.oif) ipc.oif = inet->mc_index; if (!saddr) saddr = inet->mc_addr; connected = 0; } else if (!ipc.oif) ipc.oif = inet->uc_index; if (connected) //connect()的时候已经查找过路由 rt = (struct rtable *)sk_dst_check(sk, 0); ...
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Android OpenGL ES and 2D

... then start with Canvas http://developer.android.com/guide/topics/graphics/index.html#drawing-with-canvas Another option depends on skill level is Flash+AdobeAIR to Android, I myself like and luv programming level and as you further start developing you will find out why. OpenGL : Check for - Nehe...
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A std::map that keep track of the order of insertion?

...rt via std::sort using appropriate functor. Or you could use boost::multi_index. It allows to use several indexes. In your case it could look like the following: struct value_t { string s; int i; }; struct string_tag {}; typedef multi_index_container< value_t, indexed_by&...
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Django - how to create a file and save it to a model's FileField?

...7.3 #Model class MonthEnd(models.Model): report = models.FileField(db_index=True, upload_to='not_used') import csv from os.path import join #build and store the file def write_csv(): path = join(settings.MEDIA_ROOT, 'files', 'month_end', 'report.csv') f = open(path, "w+b") #wipe ...
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How can I get column names from a table in Oracle?

...t set is zero for columns that are not part of the primary key, and is the index of the column in the primary key for columns that are part of the primary key. See also: Sqlite.org Pragma Table Info share | ...
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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?

...ion tutorial shows how branch prediction buffers work. The cache buffer is indexed by the lower portion of the address of the branch instruction. This works well unless two important uncorrelated branches share the same lower bits. In that case, you end-up with aliasing which causes many mispredic...
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Are foreign keys really necessary in a database design?

... at the data level. They also improve performance because they're normally indexed by default. share | improve this answer | follow | ...