大约有 6,186 项符合查询结果（耗时：0.0320秒） [XML]
How to use Regular Expressions (Regex) in Microsoft Excel both in-cell and loops
...ing
E.g. a$ Last character must be lower case letter a
Precedence table:
Order Name Representation
1 Parentheses ( )
2 Multipliers ? + * {m,n} {m, n}?
3 Sequence & Anchors abc ^ $
4 Alternation |
Predefined Character Abbr...
multiprocessing.Pool: When to use apply, apply_async or map?
...
Here is an overview in a table format in order to show the differences between Pool.apply, Pool.apply_async, Pool.map and Pool.map_async. When choosing one, you have to take multi-args, concurrency, blocking, and ordering into account:
...
How Drupal works? [closed]
...er().
It's a bit clunky, but due to a PHP quirk (it keeps an internal hashtable of all loaded functions), it allows Drupal to quickly check for listeners just by iterating over a list of installed plugins. For each plugin it can call function_exists() on the appropriately named pattern, and call th...
What is the smallest possible valid PDF?
...he spec.
However, Acrobat X doesn't even bother with the cross reference table anymore, so we can take that out:
%PDF-1.0
1 0 obj<</Type/Catalog/Pages 2 0 R>>endobj 2 0 obj<</Type/Pages/Kids[3 0 R]/Count 1>>endobj 3 0 obj<</Type/Page/MediaBox[0 0 3 3]>>endobj
t...
How to trace the path in a Breadth-First Search?
... excellent! My thought process lead me to believe in creating some type of table or matrix, I have yet to learn about graphs. Thank you.
– Christopher Markieta
Jan 19 '12 at 7:04
...
Should services always return DTOs, or can they also return domain models?
...s being read-only, the objects themselves aren't truly read-only (i.e. immutable). What I mean is that it doesn't happen in practice (at least in my experience). To update a domain object the Interface Layer would have to either a) reference the domain object's repository, or b) call back into the A...
MongoDB with redis
...mediately send it back over to mongoose. There is no indices here, no full table scan, nothing.
We are doing a simple lookup to say has this query been executed? Yes? Okay, take the request and send it back immediately and don’t send anything to mongo.
We have the mongoose server, the cache serv...
MongoDB: Combine data from multiple collections into one..how?
... Thanks, Dave. I used this technique for generating export and reporting tables for a high traffic site in production for the last 3 months without issue. Here's another article that describes a similar use of the technique: tebros.com/2011/07/…
– rmarscher
...
What does the brk() system call do?
...does stuff (after I drew it I discovered that Linux actually puts the executable much closer to address zero than I thought it did, and the shared libraries at surprisingly high addresses). The black regions of this diagram are unmapped -- any access causes an immediate segfault -- and they are giga...
Insert code into the page context using a content script
...eed to use DOMContentLoaded event inside the exposed code to wait for DOM.
Table of contents
Method 1: Inject another file
Method 2: Inject embedded code
Method 2b: Using a function
Method 3: Using an inline event
Dynamic values in the injected code
Method 1: Inject another file
This is the easies...