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How to import an excel file in to a MySQL database
...s. Here is a recent example I used to import a csv file named test.csv.
phpMyAdmin: Select your database first, then select the Import tab. phpMyAdmin will automatically create your table and size your VARCHAR fields, but it won't optimize the field types. phpMyAdmin has trouble importing large...
Specifically, what's dangerous about casting the result of malloc?
.... That's going to be either a sign extension or zero extension of the low order 32-bits that it has been told malloc "returns" by omitting the prototype. Since int is signed I think the conversion will be sign extension, which will in this case convert the value to zero. With a return value of 0x...
MFC 的SetWindowPos 用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...重画
SWP_NOSIZE：保持当前大小（忽略cx和cy）
SWP_NOZORDER：保持窗口在列表的当前位置（忽略hWndInsertAfter）
SWP_SHOWWINDOW：显示窗口
这些参数可以使用Or运算组合，所以如果你不希望改变窗口位置和大小，你只需要给最后...
List all indexes on ElasticSearch server?
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you can also select and order columns adding e.g. &h=health,index as well as sort with &s=health:desc
– Georg Engel
Dec 18 '18 at 19:33
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Adding new column to existing DataFrame in Python pandas
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Super simple column assignment
A pandas dataframe is implemented as an ordered dict of columns.
This means that the __getitem__ [] can not only be used to get a certain column, but __setitem__ [] = can be used to assign a new column.
For example, this dataframe can have a column added to it by...
What are the differences between a multidimensional array and an array of arrays in C#?
... @supercat: multi-dimensional arrays in C# are stored in row-major order, swapping the order of the subscripts would be slower since you would be accessing the memory non-consecutively. BTW the times reported are no longer accurate, I get almost twice as fast times for multi-dimensional arra...
Performance surprise with “as” and nullable types
...estingly, I passed on feedback about operator support via dynamic being an order-of-magnitude slower for Nullable<T> (similar to this early test) - I suspect for very similar reasons.
Gotta love Nullable<T>. Another fun one is that even though the JIT spots (and removes) null for non-nu...
What is bootstrapping?
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An example of bootstrapping is in some web frameworks. You call index.php (the bootstrapper), and then it loads the frameworks helpers, models, configuration, and then loads the controller and passes off control to it.
As you can see, it's a simple file that starts a large process.
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What are the differences between Autotools, Cmake and Scons?
... a pamphlet or a blog post), and it's more of a fractal of bad design than PHP.
– weberc2
Apr 27 '15 at 18:53
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Cross-browser testing: All major browsers on ONE machine
...ptional: Disable unnecessary services via Start > Run > services.msc
Order the rows by column Startup Type, and switch all "Automatic" services to "manual", according to the image. Whenever you want to install a MSI package, run net start msiServer ("Windows Installer"):
Optional: Disable Des...