大约有 15,000 项符合查询结果（耗时：0.0291秒） [XML]
LINQ to Entities does not recognize the method 'System.String ToString()' method, and this method ca
...
Just save the string to a temp variable and then use that in your expression:
var strItem = item.Key.ToString();
IQueryable<entity> pages = from p in context.pages
where p.Serial == strItem
select p;
The problem arises because ...
How do I URL encode a string
...Apparently this is a bug that Apple is aware of, but since they have not fixed it yet, I have been using this category to url-encode a string:
@implementation NSString (NSString_Extended)
- (NSString *)urlencode {
NSMutableString *output = [NSMutableString string];
const unsigned char *sou...
What is fastest children() or find() in jQuery?
...hods, while children() uses JavaScript interpreted in the browser. In my experiments there isn't much performance difference in typical cases.
Which to use depends on whether you only want to consider the immediate descendants or all nodes below this one in the DOM, i.e., choose the appropriate me...
try {} without catch {} possible in JavaScript?
... shown in stackoverflow.com/a/5764505/68210
– Daniel X Moore
Feb 21 '14 at 21:59
4
@DanielXMoore,...
How to clear the cache of nginx?
I use nginx to as the front server, I have modified the CSS files, but nginx is still serving the old ones.
22 Answers
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Removing a list of characters in string
...ersion ''.join(c for c ...) will be less efficient).
B. Create a regular expression on the fly and re.sub with an empty string:
>>> import re
>>> rx = '[' + re.escape(''.join(chars_to_remove)) + ']'
>>> re.sub(rx, '', subj)
'ABC'
(re.escape ensures that characters like...
Automatically open Chrome developer tools when new tab/new window is opened
...eloper Tools in Pop-ups if they were open where you opened them from. For example, if you do not have Dev Tools open and you get a popup, it won't open with Dev Tools. But if you Have Dev Tools Open and then you click something, the popup will have Dev-Tools Automatically opened.
UPDATE:
Time has ...
How to avoid isset() and empty()
I have several older applications that throw a lot of "xyz is undefined" and "undefined offset" messages when running on the E_NOTICE error level, because the existence of variables is not explicitly checked using isset() and consorts.
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What's the difference between unit, functional, acceptance, and integration tests? [closed]
...lly a method/function (e.g. given a class with a particular state, calling x method on the class should cause y to happen). Unit tests should be focussed on one particular feature (e.g., calling the pop method when the stack is empty should throw an InvalidOperationException). Everything it touche...
How to build an android library with Android Studio and gradle?
...). The 2 app projects depend on the library project. When I do the gradle export I get 3 projects that don't work. I am open to restructuring the project but haven't found any documentation on how this should be done.
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