大约有 48,000 项符合查询结果（耗时：0.0837秒） [XML]
Create a dictionary on a list with grouping
...vert it to a dictionary, as follows:
Dim qry = (From acs In ActualSales _
Group By acs.ProductID Into Group _
Select ProductID, Months = Group.ToDictionary(Function(c) c.Period) _
).ToDictionary(Function(c) c.ProductID)
The resulting query can be used as fo...
jquery data selector
...an see the available operators in the code below. Amongst them is ~= which allows regex testing:
$('a:data(category~=^mus..$,artist.name~=^M.+a$)');
I've tested it with a few variations and it seems to work quite well. I'll probably add this as a Github repo soon (with a full test suite), so keep...
Using backticks around field names
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To me it makes a lot of sense to use them at all times when dealing with field names.
Firstly, once you get into the habit, it doesn't hurt to just hit the backtick key.
Secondly, to me, it makes it easier to see what exactly are the fields in your query, and what ar...
Duplicating a MySQL table, indices, and data
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This should have been the accepted answer. As this copies all the indexes including primary key and auto_increment
– Channaveer Hakari
Oct 11 '18 at 6:06
add ...
How can you speed up Eclipse?
...nds, in Kepler SR2 (4.3.2) in 7 seconds and in Luna (4.4.0) in 10 seconds. All are Java EE bundles. Newer versions have more bundled plugins, but still the trend is obvious. (by "same" workspace I mean: same (additionally installed) plugins used, same projects checked out from version control).
La...
Get raw POST body in Python Flask regardless of Content-Type header
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Use request.get_data() to get the raw data, regardless of content type. The data is cached and you can subsequently access request.data, request.json, request.form at will.
If you access request.data first, it will call get_data with an ar...
Batch file include external file for variables
...eem to be unaware that there are significant differences and just blindly call everything with grey text on black background DOS. Nevertheless, the first variant should work in DOS as well.
Executable configuration
The easiest way to do this is to just put the variables in a batch file themselves, e...
How to Convert all strings in List to lower case using LINQ?
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Easiest approach:
myList = myList.ConvertAll(d => d.ToLower());
Not too much different than your example code. ForEach loops the original list whereas ConvertAll creates a new one which you need to reassign.
...
getting exception “IllegalStateException: Can not perform this action after onSaveInstanceState”
... working perfectly for API < 11, and Force Closing on API > 11.
I really couldn't figure out what they changed inside the Activity lifecycle in the call to saveInstance, but I here is how I solved this :
@Override
protected void onSaveInstanceState(Bundle outState) {
//No call for super(...
A Regex that will never be matched by anything
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This is actually quite simple, although it depends on the implementation / flags*:
$a
Will match a character a after the end of the string. Good luck.
WARNING:
This expression is expensive -- it will scan the entire line, find the en...