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Javascript reduce on array of objects
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After the first iteration your're returning a number and then trying to get property x of it to add to the next object which is undefined and maths involving undefined results in NaN.
try returning an object contain an x property with the sum of the x properties of the parame...
How to retrieve Request Payload
I'm using PHP , ExtJS and ajax store .
2 Answers
2
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WPF Databinding: How do I access the “parent” data context?
...tained in a window. The window's DataContext has two properties, Items and AllowItemCommand .
3 Answers
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Pass mouse events through absolutely-positioned element
...operty that makes events "pass through" the element to which it is applied and makes the event occur on the element "below".
See for details: https://developer.mozilla.org/en/css/pointer-events
It is not supported up to IE 11; all other vendors support it since quite some time (global support was...
Why is list initialization (using curly braces) better than the alternatives?
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Basically copying and pasting from Bjarne Stroustrup's "The C++ Programming Language 4th Edition":
List initialization does not allow narrowing (§iso.8.5.4). That is:
An integer cannot be converted to another integer that cannot hold its v...
What do 'statically linked' and 'dynamically linked' mean?
I often hear the terms 'statically linked' and 'dynamically linked', often in reference to code written in C , C++ or C# . What are they, what exactly are they talking about, and what are they linking?
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【转】用App Inventor 2实现电子围栏功能 - App应用开发 - 清泛IT社区，为创新赋能！
在行空板《家庭安全相册》项目中，第四部分是手机APP监护人部分。这部分需要完成手机获取家庭成员传送回来的位置后，计算是否在安全的电子围栏范围内。因为电子围栏是相对复杂的部分，因此独立一章详细说明。
App In...
How to sort an array in Bash
...set IFS
Supports whitespace in elements (as long as it's not a newline), and works in Bash 3.x.
e.g.:
$ array=("a c" b f "3 5")
$ IFS=$'\n' sorted=($(sort <<<"${array[*]}")); unset IFS
$ printf "[%s]\n" "${sorted[@]}"
[3 5]
[a c]
[b]
[f]
Note: @sorontar has pointed out that care is re...
What predefined macro can I use to detect clang?
... postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....
Insert, on duplicate update in PostgreSQL?
...mple 38-2. Exceptions with UPDATE/INSERT
This example uses exception handling to perform either UPDATE or INSERT, as appropriate:
CREATE TABLE db (a INT PRIMARY KEY, b TEXT);
CREATE FUNCTION merge_db(key INT, data TEXT) RETURNS VOID AS
$$
BEGIN
LOOP
-- first try to update the key...