大约有 13,800 项符合查询结果（耗时：0.0524秒） [XML]
fork() branches more than expected?
...
when i=0
Process_1: Buffered text= 1 dot
Process_2(created by Process_1): Buffered text= 1 dot
when i=1
Process_3(created by Process_1): Inherit 1 buffered dot from Process_1 and prints 1 dot by itself. In total Process_3 prints 2 dots.
...
Are there any reasons to use private properties in C#?
... them if I need to cache a value and want to lazy load it.
private string _password;
private string Password
{
get
{
if (_password == null)
{
_password = CallExpensiveOperation();
}
return _password;
}
}
...
How to generate JAXB classes from XSD?
....xml.bind.*;
import javax.xml.transform.stream.StreamSource;
import org.w3._2005.atom.FeedType;
public class Demo {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance("org.w3._2005.atom");
Unmarshaller unmarshaller = jc.createUnm...
How to disable and re-enable console logging in Python?
...
You can use:
logging.basicConfig(level=your_level)
where your_level is one of those:
'debug': logging.DEBUG,
'info': logging.INFO,
'warning': logging.WARNING,
'error': logging.ERROR,
'critical': logging.CRITICAL
So, if you set your_l...
What is the proper way to re-attach detached objects in Hibernate?
...ed transient collection. How can overcome this?
– dma_k
Sep 26 '10 at 21:41
1
...
Why are all fields in an interface implicitly static and final?
...a is defined by a static final field (and by convention the name uses UPPER_CASE_AND_UNDERSCORES).
share
|
improve this answer
|
follow
|
...
Can a variable number of arguments be passed to a function?
... this. The key point is that the general signature of a function is f(*list_args, **keyword_args) (not f(*list_args)).
– Eric O Lebigot
Mar 15 '13 at 3:36
...
JRE 1.7 - java version - returns: java/lang/NoClassDefFoundError: java/lang/Object
...ers.
Windows
To unpack one .pack file (for example rt.pack), run:
"%JAVA_HOME%\bin\unpack200" -r -v rt.pack rt.jar
To recursively unpack all .pack files, from the JRE root run:
for /r %f in (*.pack) do "%JAVA_HOME%\bin\unpack200.exe" -r -q "%f" "%~pf%~nf.jar"
*nix
To unpack one .pack file (...
How to make a valid Windows filename from an arbitrary string?
...em.IO.Path.GetInvalidFileNameChars())
{
fileName = fileName.Replace(c, '_');
}
Edit:
Since GetInvalidFileNameChars() will return 10 or 15 chars, it's better to use a StringBuilder instead of a simple string; the original version will take longer and consume more memory.
...
MySQL, Check if a column exists in a table with SQL
...LIKE 'fieldname';
With PHP it would be something like...
$result = mysql_query("SHOW COLUMNS FROM `table` LIKE 'fieldname'");
$exists = (mysql_num_rows($result))?TRUE:FALSE;
share
|
improve this...