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Finding sum of elements in Swift array
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Thanks for this answer. It works great and I just want to add my example code with array of custom classes: let totalSum = self.cheques.reduce(0) { $0 + $1.amount}
– Libor Zapletal
Apr 1 '15 at...
Compute a confidence interval from sample data
I have sample data which I would like to compute a confidence interval for, assuming a normal distribution.
4 Answers
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Simple argparse example wanted: 1 argument, 3 results
The documentation for the argparse python module , while excellent I'm sure, is too much for my tiny beginner brain to grasp right now. I don't need to do math on the command line or meddle with formatting lines on the screen or change option characters. All I want to do is "If arg is A, do this...
How to count objects in PowerShell?
... concepts is that commands accept and return objects instead of text. So for example, running get-alias returns me a number of System.Management.Automation.AliasInfo objects:
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Rails render partial with block
... Kornelis Sietsma)
I guess render :layout does exactly what I was looking for:
# Some View
<%= render :layout => '/shared/panel', :locals => {:title => 'some title'} do %>
<p>Here is some content</p>
<% end %>
combined with:
# /shared/_panel.html.erb
<div c...
Automatically capture output of last command into a variable using Bash?
...le to use the result of the last executed command in a subsequent command. For example,
22 Answers
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How to programmatically set drawableLeft on Android button?
...d a folder icon as a drawableLeft. I tried your suggestions here to set a "forbidden icon" when you click in a folder without read permissions, and it works. However, when you change folders and the adapter is reloaded, the forbidden icon persists (that is, drawableLeft are not redrawn). Do you know...
Duplicating a MySQL table, indices, and data
...s one:
CREATE TABLE tbl_new AS SELECT * FROM tbl_old;
I've asked this before:
Copy a MySQL table including indexes
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ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注IT技能提升
...> punk;
下面三个例子完全相同
CComPtr<IXXX> pno;
CComPtr<IXXX,&__uuidof(IXXX)> pno;
CComPtr<IXXX,&IID_IXXX> pno;
CComQIPtr可以用任何一个类型的接口指针初始化，如果初始化的值与CComQIPtr的类型相同，那么构造函数简单调用 指针的AddRef,但是，如...
C/C++ 如何向上取整？ - C/C++ - 清泛网 - 专注C/C++及内核技术
...上取整？一般地，向上取整有两种方法：#include <math.h>int _tmain(int argc, _TCHAR* argv[]){int a = 6, b = 5; ceil函数printf("%d...一般地，向上取整有两种方法：
#include <math.h>
int _tmain(int argc, _TCHAR* argv[])
{
int a = 6, b = 5;
//ceil函数
prin...