大约有 31,840 项符合查询结果（耗时：0.0464秒） [XML]
What do the makefile symbols $@ and $< mean?
...the above variables has two variants for
compatibility with other makes. One variant returns only the directory
portion of the value. This is indicated by appending a “D” to the
symbol, $(@D), $(<D), etc. The other variant returns only the file
portion of the value. This is indicated ...
When to use Amazon Cloudfront or S3
...
Amazon S3 is designed for large-capacity, low-cost file storage in one specific geographical region.* The storage and bandwidth costs are quite low.
Amazon CloudFront is a Content Delivery Network (CDN) which proxies and caches web data at edge locations as close to users as possible.
...
Convert SQLITE SQL dump file to POSTGRESQL
...mp to PostgreSQL. Even though this post has an accepted answer (and a good one at that +1), I think adding this is important.
I started looking into the solutions here and realized that I was looking for a more automated method. I looked up the wiki docs:
https://wiki.postgresql.org/wiki/Converting_...
How many characters can UTF-8 encode?
...
UTF-8 does not use one byte all the time, it's 1 to 4 bytes.
The first 128 characters (US-ASCII) need one byte.
The next 1,920 characters need two bytes to encode. This covers the remainder of almost all Latin alphabets, and also Greek...
must appear in the GROUP BY clause or be used in an aggregate function
...
@Sebas It can be done without joining on MAX (see answer by @ypercube, there is also another solution in my answer) but not the way you do it. Check expected output.
– zero323
Nov 1 '13 at 9:08
...
How to define an enumerated type (enum) in C?
...
Declaring an enum variable is done like this:
enum strategy {RANDOM, IMMEDIATE, SEARCH};
enum strategy my_strategy = IMMEDIATE;
However, you can use a typedef to shorten the variable declarations, like so:
typedef enum {RANDOM, IMMEDIATE, SEARCH} strat...
How to mock an import
... so that the B import is an ImportError again? I tried sys.modules['B'] = None but it doesn't seem to work.
– audiodude
Aug 20 '19 at 17:50
4
...
Can “using” with more than one resource cause a resource leak?
...
@Chris: Suppose there is zero work done between the allocation and the return, and between the return and the assignment. We delete all those Blah method calls. What stops a ThreadAbortException from happening at either of those points?
– ...
Are inline virtual functions really a non-sense?
...
There is one category of virtual functions where it still makes sense to have them inline. Consider the following case:
class Base {
public:
inline virtual ~Base () { }
};
class Derived1 : public Base {
inline virtual ~Derived1...
C: differences between char pointer and array [duplicate]
...current scope's stack space, but that references memory elsewhere (in this one, "now is the time" is stored elsewhere in memory, commonly a string table).
Also, note that because the data belonging to the second definition (the explicit pointer) is not stored in the current scope's stack space, it ...