大约有 44,000 项符合查询结果（耗时：0.0376秒） [XML]
Writing a compiler in its own language
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@robru I don't know about K&R's process, I'm sure this wasn't the case for it, but theoretically, the source could compile itself from the very beginning. And as long as you have something or someone who can correctly execute the program...
Hadoop “Unable to load native-hadoop library for your platform” warning
...y install, it is here:
/opt/hadoop/lib/native/libhadoop.so.1.0.0
And I know it is 64-bit:
[hadoop@VMWHADTEST01 native]$ ldd libhadoop.so.1.0.0
./libhadoop.so.1.0.0: /lib64/libc.so.6: version `GLIBC_2.14' not found (required by ./libhadoop.so.1.0.0)
linux-vdso.so.1 => (0x00007fff43510000)
lib...
Database sharding vs partitioning
... multiple instances or servers, using some kind of logic or identifier to know which instance or server to look for the data. An identifier of this kind is often called a "Shard Key".
A common, key-less logic is to use the alphabet to divide the data. A-D is instance 1, E-G is instance 2 etc. Custo...
How can I see the SQL generated by Sequelize.js?
...lease note that find* was refactored and uses only one options object from now on.. For the latest sequelize version (4) if you want to have the result for only one command:
User.findAll({where: {...}, logging: console.log})
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Eclipse: Referencing log4j.dtd in log4j.xml
I've been using log4j for quite a while now and I usually use this at the top of the log4j.xml (probably just like many others and according to Google this is the way to do it):
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Replace None with NaN in pandas dataframe
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pd.np.nan now gives FutureWarning: The pandas.np module is deprecated and will be removed from pandas in a future version. Import numpy directly instead.
– Alex Povel
Jun 22 at 17:14
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Parameterize an SQL IN clause
...f int[] (document/SQL keys) and then the code above comes in. The whole OP now takes less than 200ms :)
– Fredrik Johansson
May 3 '13 at 6:57
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Parsing XML with namespace in Python via 'ElementTree'
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@Bludwarf: The docs do mention it (now, if not when you wrote that), but you have to read them verrrry carefully. See the Parsing XML with Namespaces section: there's an example contrasting the use of findall without and then with the namespace argument, but t...
New to unit testing, how to write great tests? [closed]
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Thanks a lot, your answer was the more complete. I now better understand what mock objects are really for : I don't need to assert every call to other methods, just the relevant ones. I also don't need to know HOW things get done, but that they correctly do.
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error: passing xxx as 'this' argument of xxx discards qualifiers
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}
string getName() const {
return name;
}
This is necessary because now you can call getId() and getName() on const objects as:
void f(const StudentT & s)
{
cout << s.getId(); //now okay, but error with your versions
cout << s.getName(); //now okay, but error with...