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SSMS插件开发指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
...COM互操作注册”）
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Microsoft SQL Server\100\Tools\Shell\Addins\SSMSAddin.Connect]
"FriendlyName"="SSMSAddin "
"LoadBehavior"=dword:00000001
"Description"="SSMSAddin desc "
SSMS加载插件的原理和VS插...
Backbone.js get and set nested object attribute
...del({
a: {b: 1, c: 2}
});
You can set the attribute "a.b" with:
var _a = _.omit(nestedAttrModel.get('a')); // from underscore.js
_a.b = 3;
nestedAttrModel.set('a', _a);
Now your model will have attributes like:
{a: {b: 3, c: 2}}
with the "change" event fired.
...
Best way to give a variable a default value (simulate Perl ||, ||= )
...s called the Null coalescing operator. You can use it like this:
$name = $_GET['name'] ?? 'john doe';
This is equivalent to
$name = isset($_GET['name']) ? $_GET['name']:'john doe';
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impr...
App Inventor 2 考勤系统教程 - 定位打卡与二维码签到 · App Inventor 2 中文网
...在范围内则打卡成功。
界面设计
Screen_Attendance
├── 标签_日期时间（Clock实时更新）
├── 标签_位置（显示经纬度）
├── 标签_距离（距公司多远）
├── 标签_状态（打卡状态）
├── 按钮_打卡
├...
Remove duplicate entries using a Bash script [duplicate]
...
Perl one-liner similar to @kev's awk solution:
perl -ne 'print if ! $a{$_}++' input
This variation removes trailing whitespace before comparing:
perl -lne 's/\s*$//; print if ! $a{$_}++' input
This variation edits the file in-place:
perl -i -ne 'print if ! $a{$_}++' input
This variation e...
How to remove constraints from my MySQL table?
...has a special syntax for dropping foreign key constraints:
ALTER TABLE tbl_magazine_issue
DROP FOREIGN KEY FK_tbl_magazine_issue_mst_users
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f...
Delete files older than 15 days using PowerShell
...n the $limit.
Get-ChildItem -Path $path -Recurse -Force | Where-Object { !$_.PSIsContainer -and $_.CreationTime -lt $limit } | Remove-Item -Force
# Delete any empty directories left behind after deleting the old files.
Get-ChildItem -Path $path -Recurse -Force | Where-Object { $_.PSIsContainer -and...
How do synchronized static methods work in Java and can I use it for loading Hibernate entities?
...ic methods, you can
class SomeClass {
private static final Object LOCK_1 = new Object() {};
private static final Object LOCK_2 = new Object() {};
static void foo() {
synchronized(LOCK_1) {...}
}
static void fee() {
synchronized(LOCK_1) {...}
}
static void...
How to read the database table name of a Model instance?
...
Found the answer myself: the _meta attribute of an instance has the information:
model_instance._meta.db_table
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...
What is a regular expression for a MAC Address?
...perty \p{xdigit} includes the FULLWIDTH versions. You might prefer \p{ASCII_Hex_Digit} instead.
The answer to the question asked might be best answered — provided you have a certain venerable CPAN module installed — by typing:
% perl -MRegexp::Common -lE 'say $RE{net}{MAC}'
I show the partic...