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What is the difference between YAML and JSON?
...fact the YAML homepage is itself valid YAML, yet it is easy for a human to read.
YAML has the ability to reference other items within a YAML file using "anchors." Thus it can handle relational information as one might find in a MySQL database.
YAML is more robust about embedding other serializatio...
DaffyMenu 扩展：弹出菜单扩展，为组件添加弹出式菜单功能 · App Inventor 2 中文网
... 属性
IsMenuVisible 菜单可见(组件) {:.boolean .read-only}
返回指定组件的菜单是否当前可见。
组件：组件类型，要检查的组件
返回值：布尔类型，菜单是否可见
MenuItemCount 菜单项数量(组件) {:.number...
Best way to determine user's locale within browser
...d their browser to prefer.
Unfortunately this header is not available for reading inside JavaScript; all you get is navigator.language, which tells you what localised version of the web browser was installed. This is not necessarily the same thing as the user's preferred language(s). On IE you inst...
What is the difference between lower bound and tight bound?
...d 2n^2 = O(n^2) is asymptotically tight, but the bound 2n = O(n^2) is not. Read more: stackoverflow.com/questions/1364444/…
– Dragos Strugar
Sep 29 '17 at 12:41
add a commen...
How would I extract a single file (or changes to a file) from a git stash?
...
On the git stash manpage you can read (in the "Discussion" section, just after "Options" description) that:
A stash is represented as a commit whose tree records the state of the
working directory, and its first parent is the commit at HEAD w...
What is stack unwinding?
...
reading Nikolai's, jrista's and your answer in this order, now it makes sense!
– n611x007
Aug 10 '12 at 13:46
...
Which is faster: multiple single INSERTs or one multiple-row INSERT?
...ment will save you an overhead of 7 per insert statement, which in further reading the text also says:
If you are inserting many rows from the same client at the same time, use INSERT statements with multiple VALUES lists to insert several rows at a time. This is considerably faster (many times ...
Why there is no ForEach extension method on IEnumerable?
...
There is already a foreach statement included in the language that does the job most of the time.
I'd hate to see the following:
list.ForEach( item =>
{
item.DoSomething();
} );
Instead of:
foreach(Item item in list)
{
...
SQL Server 2008: how do I grant privileges to a username?
...
If you want to give your user all read permissions, you could use:
EXEC sp_addrolemember N'db_datareader', N'your-user-name'
That adds the default db_datareader role (read permission on all tables) to that user.
There's also a db_datawriter role - which g...
Why doesn't Java offer operator overloading?
...-- operator+ would likely deal with values and objects, but operator= is already implemented to deal with references.
In C++, you should only be dealing with one kind of comparison at a time, so it can be less confusing. For example, on Complex, operator= and operator== are both working on values -...