大约有 40,000 项符合查询结果（耗时：0.0518秒） [XML]
Using a Single Row configuration table in SQL Server database. Bad idea?
...
I have done this two ways in the past - a single row table and a key/value pair table - and there are positives and negatives to each approach.
Single Row
positive: the values are stored in the correct type
positive: it is easier to...
Capybara Ambiguity Resolution
...xample select element by id, class or other css/xpath locator so that only one element will match it.
As a note here are some locators that I usually consider useful when resolving ambiguity:
find('ul > li:first-child')
It's more useful than first('ul > li') as it will wait till first li...
What does it mean by buffer?
...
Imagine that you're eating candy out of a bowl. You take one piece regularly. To prevent the bowl from running out, someone might refill the bowl before it gets empty, so that when you want to take another piece, there's candy in the bowl.
The bowl acts as a buffer between you an...
How to think in data stores instead of databases?
...arates it from RDMBS. to scale better with large dataset, App Engine has done some changes(some means lot of changes).
RDBMS VS DataStore
Structure
In database, we usually structure our data in Tables, Rows which is in Datastore it becomes Kinds and Entities.
Relations
In RDBMS, Most of the peop...
Split string to equal length substrings in Java
...
Here's the regex one-liner version:
System.out.println(Arrays.toString(
"Thequickbrownfoxjumps".split("(?<=\\G.{4})")
));
\G is a zero-width assertion that matches the position where the previous match ended. If there was no previo...
Greedy vs. Reluctant vs. Possessive Quantifiers
...no characters left. So it "backtracks", making the greedy quantifier match one less character (leaving the "o" at the end of the string unmatched). That still doesn't match the f in the regex, so it backtracks one more step, making the greedy quantifier match one less character again (leaving the "o...
Interview question: Check if one string is a rotation of other string [closed]
... would object a bit to this as an interview question. It has an "aha!" component, I think. Most programmers (me included) would just use brute force, which is not unreasonable anyway, and that may feel like not "clever" enough to the interviewer.
– Daniel Daranas
...
Can an html element have multiple ids?
...
Contrary to what everyone else said, the correct answer is YES
The Selectors spec is very clear about this:
If an element has multiple ID attributes, all of them must be treated as IDs for that element for the purposes of the ID selector.Such...
How to create an object property from a variable value in JavaScript? [duplicate]
...) but whatever... this is what you want.
– Dominic Cooney
Feb 11 '10 at 2:44
15
What I meant is t...
Best way to use multiple SSH private keys on one client
...
I found this post very helpful. One error I made when creating the config file was I put a .txt file in the .ssh folder instead of running the "touch" command to create a config file.
– M_x_r
Dec 22 '12 at 18:17
...