大约有 47,000 项符合查询结果（耗时：0.0580秒） [XML]
How to change the author and committer name and e-mail of multiple commits in Git?
...ch the docs now give this warning:
git filter-branch has a plethora of pitfalls that can produce non-obvious manglings of the intended history rewrite (and can leave you with little time to investigate such problems since it has such abysmal performance). These safety and performance issues cannot b...
What does an Asterisk (*) do in a CSS selector?
...
It is a wildcard, this means it will select all elements within that portion of the DOM.
For example, if I want apply margin to every element on my entire page you can use:
* {
margin: 10px;
}
You can also use this within sub-selections, for example the followi...
Why is String immutable in Java?
...le for several reasons, here is a summary:
Security: parameters are typically represented as String in network connections, database connection urls, usernames/passwords etc. If it were mutable, these parameters could be easily changed.
Synchronization and concurrency: making String immutable aut...
git ignore all files of a certain type, except those in a specific subfolder
... my case, I realized that I want to ignore nothing in my spec directory at all. So I am able to get away with a very simple !spec. Works like a charm.
– Alex Wayne
Jan 6 '11 at 23:31
...
Can you write virtual functions / methods in Java?
...
From wikipedia
In Java, all non-static methods are by
default "virtual functions." Only
methods marked with the keyword final,
which cannot be overridden, along with
private methods, which are not
inherited, are non-virtual.
...
How do you kill all current connections to a SQL Server 2005 database?
...bar] SET SINGLE_USER WITH ROLLBACK IMMEDIATE
– Ben Challenor
Jan 21 '11 at 11:11
14
Please Note -...
What's the difference between git reflog and log?
...eline --graph --decorate.)
git reflog doesn't traverse HEAD's ancestry at all. The reflog is an ordered list of the commits that HEAD has pointed to: it's undo history for your repo. The reflog isn't part of the repo itself (it's stored separately to the commits themselves) and isn't included in pu...
What is the best Battleship AI?
...n test algorithms.
Download Dreadnought 1.2.
Strategies:
keep track of all possible positions for ships that have >0 hits. The list never gets bigger than ~30K so it can be kept exactly, unlike the list of all possible positions for all ships (which is very large).
The GetShot algorithm has ...
What is better, adjacency lists or adjacency matrices for graph problems in C++?
...e of a specific edge
between any two nodes O(1)
It is slow to iterate over all edges
It is slow to add/delete a node; a complex operation O(n^2)
It is fast to add a new edge O(1)
Adjacency List
Memory usage depends on the number of edges (not number of nodes),
which might save a lot of memor...
Eventual consistency in plain English
...omorrow.
You tell your neighbor that it is going to rain tomorrow.
Eventually, all of the servers (you, me, your neighbor) know the truth (that it's going to rain tomorrow), but in the meantime the client (his wife) came away thinking it is going to be sunny, even though she asked after one or mor...