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Error handling in C code
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I like the error as return-value way. If you're designing the api and you want to make use of your library as painless as possible think about these additions:
store all possible error-states in one typedef'ed enum and use it in your lib. Don't just return ints...
Peak detection in a 2D array
...measuring pressure under a dogs paw. I use Python for my data analysis and now I'm stuck trying to divide the paws into (anatomical) subregions.
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Annotating text on individual facet in ggplot2
...p + geom_text(data = ann_text,label = "Text")
It should work without specifying the factor variable completely, but will probably throw some warnings:
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Why is creating a Thread said to be expensive?
... executed within the JVM thread in the OS. They are not often used, to my knowledge.
The biggest factor I can think of in the thread-creation overhead, is the stack-size you have defined for your threads. Thread stack-size can be passed as a parameter when running the VM.
Other than that, thread ...
BLE协议—广播和扫描 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...广播方式的报文有4种，分别为可连接的非定向广播（ADV_IND）、可连接的定向广播（ADV_DIRECT_IND）、可扫描非定向广播（ADV_SCAN_IND）、不可连接的非定向广播（ADV_NONCONN_IND）
4种广播的使用场景各不相同
可连接的非定向广播（A...
Difference between “git checkout ” and “git checkout -- ”
... point as a file name, no matter what it looks like." This is not Git-specific, it's a general Unix command line convention. Normally you use it to clarify that an argument is a file name rather than an option, e.g.
rm -f # does nothing
rm -- -f # deletes a file named "-f"
git checkout1 ...
Ask for User Permission to Receive UILocalNotifications in iOS 8
I have set up local notifications in the App Delegate Using this:
5 Answers
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Delete an element from a dictionary
..., and also using linear space. For small dicts, this is not a problem. But if you're planning to make lots of copies of large dicts, you probably want a different data structure, like a HAMT (as described in this answer).
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Find and restore a deleted file in a Git repository
... got an error. error: pathspec <filename> did not match any file(s) known to git.. The solution was to use git bash.
– donturner
Jul 26 '12 at 18:07
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Dictionary returning a default value if the key does not exist [duplicate]
...orms, these extensions work when key doesn't exist, but TryGetValue throws if key is null. Knowing whether key is nullable or not would make this a trivial check.
– ProfK
Sep 27 '12 at 6:12
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