大约有 45,000 项符合查询结果(耗时:0.0447秒) [XML]
Why does Lua have no “continue” statement?
...ollowing loop
-- not valid Lua 5.1 (or 5.2)
for k,v in pairs(t) do
if isstring(k) then continue end
-- do something to t[k] when k is not a string
end
could be written
-- valid Lua 5.1 (or 5.2)
for k,v in pairs(t) do
if not isstring(k) then
-- do something to t[k] when k is not a str...
PHPExcel auto size column width
...
Thank you so much. It works. It does not calculate the extra spacing created from the bold font, although that's expected (I've read it somewhere). Could you update your answer to include that too?
– Alkis Kalogeris
May 26 '13 at 17:59
...
How to make a vertical line in HTML
...t trick to get line styled same as standard <hr>. Probably also need extra styling to float on side of content (example: float:left;)
– awe
Jul 30 '13 at 9:00
...
Reducing MongoDB database file size
...
UPDATE: with the compact command and WiredTiger it looks like the extra disk space will actually be released to the OS.
UPDATE: as of v1.9+ there is a compact command.
This command will perform a compaction "in-line". It will still need some extra space, but not as much.
MongoDB comp...
Should arrays be used in C++?
..." },
// ...
};
This is often preferable to using a vector (and std::string), since it
avoids all order of initialization issues; the data is pre-loaded,
before any actual code can be executed.
Finally, related to the above, the compiler can calculate the actual
size of the array from the init...
Changing Java Date one hour back
... database. Use a JDBC driver compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.* classes.
Where to obtain the java.time classes?
Java SE 8, Java SE 9, Java SE 10, Java SE 11, and later - Part of the standard Java API with a bundled implementation.
Java 9 adds some mi...
How to convert an Stream into a byte[] in C#? [duplicate]
... Yes it does. You could use MemoryStream.GetBuffer() to avoid the extra copy but beware that the size of the array returned is not the size of the data.
– James Dingle
Apr 30 '12 at 3:25
...
What is the “right” way to iterate through an array in Ruby?
...out creating an array (consider 0..1000000000)
working for any Range (e.g. Strings, not just Integers)
without using any extra object oriented power (i.e. no class modification)
I believe this is impossible without defining a pred method, which means modifying the Range class to use it. If you ca...
JPA: what is the proper pattern for iterating over large result sets?
... now, and thus the latest Hibernate we can use is 3.3.2.
Adding couple of extra parameters did the job, and code like this runs without OOMEs:
StatelessSession session = ((Session) entityManager.getDelegate()).getSessionFactory().openStatelessSession();
Query query = session
...
Why aren't pointers initialized with NULL by default?
... then assign.
So now we have the situation that the compiler has added an extra instruction to the code that initializes the variable to NULL then later the developer code is added to do the correct initialization. Or under other conditions the variable is potentially never used. A lot of C++ devel...