大约有 41,000 项符合查询结果(耗时:0.0418秒) [XML]

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jQuery If DIV Doesn't Have Class “x”

...y I need to do an if statement to see if $this doesn't contain the class '.selected'. 7 Answers ...
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Expert R users, what's in your .Rprofile? [closed]

...se it might breaks my coauthors' code, I wish it was the default. Why? 1) Character vectors use less memory (but only barely); 2) More importantly, we would avoid problems such as: > x <- factor(c("a","b","c")) > x [1] a b c Levels: a b c > x <- c(x, "d") > x [1] "1" "2" "3" "...
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How do I UPDATE from a SELECT in SQL Server?

... SQL Server , it is possible to insert rows into a table with an INSERT.. SELECT statement: 35 Answers ...
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Is there a way to change the environment variables of another process in Unix?

...ocesses. Suppose that you write your own shared library which implements 'char *getenv'. Then, you set up 'LD_PRELOAD' or 'LD_LIBRARY_PATH' env. vars so that both your processes are run with your shared library preloaded. This way, you will essentially have a control over the code of the 'getenv' ...
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Convert to absolute value in Objective-C

...+ programs too.) (Alas, there is no habs(short) function. Or scabs(signed char) for that matter...) Apple's and GNU's Objective-C headers also include an ABS() macro which is type-agnostic. I don't recommend using ABS() however as it is not guaranteed to be side-effect-safe. For instance, ABS(a+...
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MySQL Query to select data from last week?

Hi I have a table with a date field and some other information. I want to select all entries from the past week, (week start from Sunday). ...
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SQL query to select dates between two dates

... you should put those two dates between single quotes like.. select Date, TotalAllowance from Calculation where EmployeeId = 1 and Date between '2011/02/25' and '2011/02/27' or can use select Date, TotalAllowance from Calculation where EmployeeId = 1 and Da...
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Insert the carriage return character in vim

...tored a file in Unix ( \n newlines). I need to insert the carriage return character ( U+000D aka \r ). When I try to paste it from the clipboard ( "+p ) or type it using Ctrl + Shift + u - 000d , the linefeed is inserted ( U+000A ). ...
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jquery get all form elements: input, textarea & select

Is there an easy way (without listing them all separately) in jquery to select all form elements and only form elements. 12...
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How do I programmatically set the value of a select box element using JavaScript?

I have the following HTML <select> element: 17 Answers 17 ...