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Is there a simple, elegant way to define singletons? [duplicate]
...on in use of your API. I would still just put methods in a module, and consider the module as the singleton.
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BLE（二）信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区，...
...BLUETOOTH SPECIFICATION Version 4.0 [Vol 6] Part B 2.4）
LLID（逻辑链路ID）：0x01表示该数据包是一个帧的延续内容，或者这是一个空的“逻辑链路控制及适配协议”数据包；0x02表示一个“逻辑链路控制及适配协议”数据包的开始...
How are people unit testing with Entity Framework 6, should you bother?
...ion these are every bit as important.
There are a couple of things to consider:
Your database needs to be in a known state with each test. Most systems use either a backup or create scripts for this.
Each test must be repeatable
Each test must be atomic
There are two main approaches to setting ...
Two sets of parentheses after function call
...lowing way: let add = (x) => (y) => x + y;
– guido
Nov 19 '15 at 8:14
2
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Database Structure for Tree Data Structure
...ik Ben-Gann has a good overview of the most common options in his book "Inside Microsoft SQL Server 2005: T-SQL Querying".
The main things to consider when choosing a model are:
1) Frequency of structure change - how frequently does the actual structure of the tree change. Some models provide bett...
How to write a:hover in inline CSS?
...swer: you can't.
Long answer: you shouldn't.
Give it a class name or an id and use stylesheets to apply the style.
:hover is a pseudo-selector and, for CSS, only has meaning within the style sheet. There isn't any inline-style equivalent (as it isn't defining the selection criteria).
Response ...
How to trigger jQuery change event in code
... something like:
$(document).ready(function() {
$("#yourInitialElementID").change(function() {
// Do something here...
$(".yourDropDownClass").change();
});
});
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Handling specific errors in JavaScript (think exceptions)
... "Exception thrown and not caught" error. Following is the exceedingly stupid (as always) explanation from msdn: "You included a throw statement, but it was not enclosed within a try block, or there was no associated catch block to trap the error. Exceptions are thrown from within the try block usin...
Turning a Comma Separated string into individual rows
...nctions from SQL Server:
Sample table:
CREATE TABLE Testdata
(
SomeID INT,
OtherID INT,
String VARCHAR(MAX)
)
INSERT Testdata SELECT 1, 9, '18,20,22'
INSERT Testdata SELECT 2, 8, '17,19'
INSERT Testdata SELECT 3, 7, '13,19,20'
INSERT Testdata SELECT 4, 6, ''
INSERT Testdata SELE...
MDI CDockablePane使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...pMenu::SetForceMenuFocus(FALSE);
InitUserToolbars(NULL, uiFirstUserToolBarId, uiLastUserToolBarId);
EnablePaneMenu(TRUE, ID_VIEW_CUSTOMIZE, 0, ID_VIEW_TOOLBAR);
CDockingManager::SetDockingMode(DT_SMART);
EnableAutoHidePanes(CBRS_ALIGN_ANY);
EnableDocking(CBRS_ALIGN_ANY);
（1） 第一种...