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Converting integer to string in Python
...tr__() defined. In fact
str(a)
is equivalent to
a.__str__()
The same if you want to convert something to int, float, etc.
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Why Choose Struct Over Class?
...ruct version took 0.010532942s (900 times faster)
OLD RESULTS (from unknown time)
(Ran on struct/class with 1 field, not 10)
With release build on my MacBook Pro:
The class version took 1.10082 sec
The struct version took 0.02324 sec (50 times faster)
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How to find the JVM version from a program?
....getProperty("java.version") returns what you need.
You can also use JMX if you want:
ManagementFactory.getRuntimeMXBean().getVmVersion()
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Oracle 11.2.0.4 RAC FOR redhat 6.4 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...ng
cd /etc/sysconfig/network-scripts/
cp /etc/sysconfig/network-scripts/ifcfg-eth* /etc/sysconfig/network-scripts/备份
vi ifcfg-bond0
节点1 为172.16.110.100
节点2 为172.16.110.110
vi ifcfg-bond1
节点1 为10.10.120.100
节点2 为10.10.120.110
节点1，节点2一...
Is “argv[0] = name-of-executable” an accepted standard or just a common convention?
...dards documents to be sure. For example, ISO C11 states (my emphasis):
If the value of argc is greater than zero, the string pointed to by argv[0] represents the program name; argv[0][0] shall be the null character if the program name is not available from the host environment.
So no, it's onl...
What is “the inverse side of the association” in a bidirectional JPA OneToMany/ManyToOne association
...nship will not be bidirectional (the inverse aka "many" side will have no knowledge of its "owner"). This can be desirable for encapsulation/loose coupling:
// "One" Customer owns the associated orders by storing them in a customer_orders join table
public class Customer {
@OneToMany(cascade = ...
Union of dict objects in Python [duplicate]
...t objects in Python, where a (key, value) pair is present in the result iff key is in either dict (unless there are duplicates)?
...
what is the right way to treat Python argparse.Namespace() as a dictionary?
If I want to use the results of argparse.ArgumentParser() , which is a Namespace object, with a method that expects a dictionary or mapping-like object (see collections.Mapping ), what is the right way to do it?
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MySql Table Insert if not exist otherwise update
...
now I defined the datenum as unique, and it's work fine, thanks
– OHLÁLÁ
May 18 '11 at 8:21
1
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How to get current moment in ISO 8601 format with date, hour, and minute?
... Quoted "Z" to indicate UTC, no timezone offset
df.setTimeZone(tz);
String nowAsISO = df.format(new Date());
Using a new Date() as shown above will format the current time.
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