大约有 46,000 项符合查询结果（耗时：0.0692秒） [XML]
Using OR in SQLAlchemy
I've looked through the docs and I cant seem to find out how to do an OR query in SQLAlchemy. I just want to do this query.
...
ThreadStatic v.s. ThreadLocal: is generic better than attribute?
...ric.
Why different design solutions were chosen?
What are the advantages and disadvantages of using generic over attributes in this case?
...
What is the difference between the $parse, $interpolate and $compile services?
What is the difference between $parse , $interpolate and $compile services?
For me they all do the same thing: take template and compile it to template-function.
...
What is the difference between `after_create` and `after_save` and when to use which?
Are after_create and after_save the same as per functionality?
3 Answers
3
...
Cleaning `Inf` values from an R dataframe
...x, is.infinite(x),NA)))
Option 2 -- data.table
You could use data.table and set. This avoids some internal copying.
DT <- data.table(dat)
invisible(lapply(names(DT),function(.name) set(DT, which(is.infinite(DT[[.name]])), j = .name,value =NA)))
Or using column numbers (possibly faster if th...
What does default(object); do in C#?
... worth making it explicit)
The biggest use of default(T) is in generics, and things like the Try... pattern:
bool TryGetValue(out T value) {
if(NoDataIsAvailable) {
value = default(T); // because I have to set it to *something*
return false;
}
value = GetData();
re...
How to use > in an xargs command?
I want to find a bash command that will let me grep every file in a directory and write the output of that grep to a separate file. My guess would have been to do something like this
...
str performance in python
...
'%s' % 100000 is evaluated by the compiler and is equivalent to a constant at run-time.
>>> import dis
>>> dis.dis(lambda: str(100000))
8 0 LOAD_GLOBAL 0 (str)
3 LOAD_CONST 1 (100000)
...
CSS table column autowidth
... width: 1px;
white-space: nowrap;
}
Flexible, Class-Based Solution
And a more flexible solution is creating a .fitwidth class and applying that to any columns you want to ensure their contents are fit on one line:
td.fitwidth {
width: 1px;
white-space: nowrap;
}
And then in your ...
The term 'Get-ADUser' is not recognized as the name of a cmdlet
...the following query to list the users in a windows 2008 server, but failed and got the below error.
6 Answers
...