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Emulate a do-while loop in Python?
... emulate a do-while loop in a Python program. Unfortunately, the following straightforward code does not work:
16 Answers
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Prefer composition over inheritance?
...:
You can't change the implementation inherited from super classes at runtime (obviously because inheritance is defined at compile time).
Inheritance exposes a subclass to details of its parent class implementation, that's why it's often said that inheritance breaks encapsulation (in a sense that ...
Avoid browser popup blockers
...ithout getting hit by the popup blocker, but if you put the same code in a timer event it will be blocked. Depth of call chain is also a factor - some older browsers only look at the immediate caller, newer browsers can backtrack a little to see if the caller's caller was a mouse click etc. Keep i...
C++ valarray vs. vector
...alarray is kind of an orphan that was born in the wrong place at the wrong time. It's an attempt at optimization, fairly specifically for the machines that were used for heavy-duty math when it was written -- specifically, vector processors like the Crays.
For a vector processor, what you generally...
Breadth First Vs Depth First
...oad Node
Foreach child of Node
ProcessNode(child)
/* Alternate time to work on the payload Node (see below) */
The recursion ends when you reach a node that has no children, so it is guaranteed to end for
finite, acyclic graphs.
At this point, I've still cheated a little. With a lit...
How to initialize/instantiate a custom UIView class with a XIB file in Swift
... I tried this with Swift 2.1 and Xcode 7.2.1. It worked some of the time and would hang up unpredictably at others with a mutex lock. The last two lines used directly in code worked every time with the last line modified to be var myView = nib.instantiate... as! myViewType
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ADO方式读取EXCEL数据存在致命BUG!!!!! - 更多技术 - 清泛网 - 专注C/C++及内核技术
...到VBA窗口，执行后会依次显示每个工作表表的名称：
Sub x()
Dim ExcelDB As New ADODB.Connection
Dim RS As ADODB.Recordset
Dim S As String
Set ExcelDB = New ADODB.Connection
Set RS = New Recordset
If Application.Version < 12 Then ExcelDB.Open "Provider=Micros...
Implementing comparison operators via 'tuple' and 'tie', a good idea?
...oost or C++11.)
When writing small structs with only two elements, I sometimes tend to choose a std::pair , as all important stuff is already done for that datatype, like operator< for strict-weak-ordering.
The downsides though are the pretty much useless variable names. Even if I myself c...
How to read last commit comment?
Often during a commit ( $ git -commit -m "" ), I wish to read my last comment to remember what progress I have made. Is there an easy way to directly access the last commit message through command-line? (I'm using Windows.)
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The way to check a HDFS directory's size?
I know du -sh in common Linux filesystems. But how to do that with HDFS?
10 Answers
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