大约有 5,100 项符合查询结果（耗时：0.0297秒） [XML]
Version vs build in Xcode
...ame values.
When viewing the Info tab, if you right-click and select Show Raw Keys/Values, you'll see the actual names are CFBundleShortVersionString (Version) and CFBundleVersion (Build).
The Version is usually used how you appear to have been using it with Xcode 3. I'm not sure on what level you...
Caveats of select/poll vs. epoll reactors in Twisted
...you can't even use select() if you have file descriptor values in the 10k+ range - unless you recompile half your system to change FD_SETSIZE - so I wonder how this strategy worked at all. For the scenario you described, I'd probably look at poll() which is much more like select() than it is like e...
Quickly reading very large tables as dataframes
... currently claims to be "1.5-2x slower" than data.table::fread).
read.csv.raw from iotools provides a third option for quickly reading CSV files.
Trying to store as much data as you can in databases rather than flat files. (As well as being a better permanent storage medium, data is passed to and...
How to initialize a vector in C++ [duplicate]
...t page, actually. The constructor can take the first and last element in a range and create a vector with everything in between. The tipoff is the & will result in memory addresses.
– Prashant Kumar
Jun 23 '13 at 13:43
...
Why would one omit the close tag?
...; however solves just a trickle of the common headers already sent causes (raw output, BOM, notices, etc.) and their follow-up problems.
PHP actually contains some magic to eat up single linebreaks after the ?> closing token. Albeit that has historic issues, and leaves newcomers still susceptibl...
Why hasn't functional programming taken over yet?
...ch for the sorts of problems we face. Our problems are all about taking in raw information -- strings and metadata -- and transforming them into different strings and metadata. In situations where mutations occur, like someone is typing in the IDE, the problem space inherently lends itself to functi...
Quickly find whether a value is present in a C array?
... need to find a hash function that maps your input value to a value in the range 0..n, where there are no collisions for all the valid values you care about. That is, no two "valid" values hash to the same output value. When searching for a good hash function, you aim to:
Keep the hash function rea...
将 App Inventor 2 项目连接到外部传感器 · App Inventor 2 中文网
...able microcontroller and can provide input/output functionality for a wide range of applications. By building out IOIO/MOIO board support for AppInventor, creating a robotics kit and accompanying tutorials, we hope to make hardware programming more accessible.
The Kit
For sensors, the kit includes ...
How to find the kth smallest element in the union of two sorted arrays?
...len(a)+len(b)) time.
Assumption: The inputs are correct, i.e., k is in the range [0, len(a)+len(b)].
Base cases:
If length of one of the arrays is 0, the answer is kth element of the second array.
Reduction steps:
If mid index of a + mid index of b is less than k:
If mid element of a is gr...
Auto column width in EPPlus
...
Just wanted to point out you can fit cells with out specifying the range, just make sure to call this after you've formatted all columns etc:
worksheet.Cells.AutoFitColumns()
share
|
impro...