大约有 47,000 项符合查询结果（耗时：0.0609秒） [XML]
Create a pointer to two-dimensional array
...d T[10] are different types.
The following alternative doesn't work at all, because the element type of the array, when you view it as a one-dimensional array, is not uint8_t, but uint8_t[20]
uint8_t *matrix_ptr = l_matrix; // fail
The following is a good alternative
uint8_t (*matrix_ptr)[...
Querying data by joining two tables in two database on different servers
...tely from each database and join it in your code. Your database connection strings could be part of your App-server configuration through either a database or a config file.
share
|
improve this ans...
Delete files older than 10 days using shell script in Unix [duplicate]
... these! Once, using a command very much like this in a cron job, I accidentally deleted every file on my production mail server older than 10 days, which I can tell you was no fun to recover from.
– DSimon
May 28 '14 at 20:00
...
C# Linq Group By on multiple columns [duplicate]
...that there was a cleaner way. You could serialize the object into a single string and group on that, but that would require more code elsewhere. So, in my mind, this answer is the cleanest way regardless how many properties.
– Enigmativity
Aug 21 '15 at 23:03
...
How to make a SIMPLE C++ Makefile
...
@jcoe It does an unnecessary extra preprocessor pass to generate dependencies. Doing unnecessary work it just dissipates heat melting the ice poles and, on a bigger scale, is nearing the heat death of our universe.
– Maxim Egorushki...
PHP: exceptions vs errors?
...
Exceptions are thrown - they are intended to be caught. Errors are generally unrecoverable. Lets say for instance - you have a block of code that will insert a row into a database. It is possible that this call fails (duplicate ID) - you will want to have a "Error" which in this case is an "Exc...
What is a Question Mark “?” and Colon “:” Operator Used for? [duplicate]
...hing, and this something can be anything:
int k = a > b ? 7 : 8;
String s = (foobar.isEmpty ()) ? "empty" : foobar.toString ();
share
|
improve this answer
|
foll...
Symfony 2 EntityManager injection in service
...to inject doctrine EntityManager, but I don't see that __construct() is called on my service, and injection doesn't work.
...
Newline in markdown table?
...
Use <br> to force a line break within a table cell.
Markdown Extra and MultiMarkdown allow tables, but after trial and error, it seems an HTML line break is needed in this case.
share
|
...
Rails.env vs RAILS_ENV
...s/lib/initializer.rb, line 55
def env
@_env ||= ActiveSupport::StringInquirer.new(RAILS_ENV)
end
But, look at specifically how it's wrapped, using ActiveSupport::StringInquirer:
Wrapping a string in this class gives
you a prettier way to test for
equality. The value return...