大约有 40,000 项符合查询结果（耗时：0.0365秒） [XML]
Finding ALL duplicate rows, including “elements with smaller subscripts”
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Hold on, I just ran a test and found I was wrong: x <- c(1:9, 7:10, 5:22); y <- c(letters, letters[1:5]); test <- data.frame(x, y); test[duplicated(test$x) | duplicated(test$x, fromLast=TRUE), ] Returned all three of he copies of 7, 8, an...
Is JavaScript supported in an email message?
...ipt from the mail before handing it to the browser. So JS does not work. I tested Gmail in Firefox 56 and Chrome 61. Also checked the code in webmaster tools, the JS code is removed.
– Christopher K.
Nov 6 '17 at 14:12
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How to run `rails generate scaffold` when the model already exists?
... available to you.
Rails:
controller
generator
helper
integration_test
mailer
migration
model
observer
performance_test
plugin
resource
scaffold
scaffold_controller
session_migration
stylesheets
If you'd like to generate a controller scaffold for your model, see scaf...
Mocking Extension Methods with Moq
...Here is the description of the tool:
Moles is a lightweight framework for test stubs and detours in .NET that is based on delegates.
Moles may be used to detour any .NET method, including non-virtual/static methods in sealed types.
You can use Moles with any testing framework (it's independent abo...
Test if something is not undefined in JavaScript
...for me:
typeof possiblyUndefinedVariable !== "undefined"
I will have to test that in other browsers and see how things go I suppose.
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Why must jUnit's fixtureSetup be static?
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JUnit always creates one instance of the test class for each @Test method. This is a fundamental design decision to make it easier to write tests without side-effects. Good tests do not have any order-of-run dependencies (see F.I.R.S.T) and creating fresh instances ...
Query for documents where array size is greater than 1
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I believe this is the fastest query that answers your question, because it doesn't use an interpreted $where clause:
{$nor: [
{name: {$exists: false}},
{name: {$size: 0}},
{name: {$size: 1}}
]}
It means "all documents except those with...
Remove json element
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I don't get this answer. Where's "foo" in the test data?
– Tony
Oct 4 '13 at 2:45
9
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Deciding between HttpClient and WebClient
...--------------+--------------------------------------------+
| Mocking and testing WebClient is difficult | Mocking and testing HttpClient is easy |
+--------------------------------------------+--------------------------------------------+
| Supports FTP | No suppo...
endsWith in JavaScript
...ese days, the simple this.substr(-suffix.length) === suffix approach is fastest on Chrome, the same on IE11 as indexOf, and only 4% slower (fergetaboutit territory) on Firefox: jsperf.com/endswith-stackoverflow/14 And faster across the board when the result is false: jsperf.com/endswith-stackoverflo...