大约有 43,100 项符合查询结果（耗时：0.0520秒） [XML]
Set scroll position
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182
You can use window.scrollTo(), like this:
window.scrollTo(0, 0); // values are x,y-offset
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Group by multiple columns in dplyr, using string vector input
...ike so:
data = data.frame(
asihckhdoydkhxiydfgfTgdsx = sample(LETTERS[1:3], 100, replace=TRUE),
a30mvxigxkghc5cdsvxvyv0ja = sample(LETTERS[1:3], 100, replace=TRUE),
value = rnorm(100)
)
# get the columns we want to average within
columns = names(data)[-3]
library(dplyr)
df1 <- data...
Measuring text height to be drawn on Canvas ( Android )
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136
What about paint.getTextBounds() (object method)
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Ignore Xcode warnings when using Cocoapods
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edited Sep 19 '15 at 4:55
King-Wizard
14.8k44 gold badges7676 silver badges7474 bronze badges
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What's best SQL datatype for storing JSON string?
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199
Certainly NOT:
TEXT, NTEXT: those types are deprecated as of SQL Server 2005 and should not ...
How to find out which view is focused?
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113
Call getCurrentFocus() on the Activity.
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How do I increase the number of displayed lines of a Java stack trace dump?
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122
You don't need to; that information is present elsewhere in the stack trace. From the docs of ...
Run Cron job every N minutes plus offset
...-59/20 * * * *
Explanation
An * in the minute field is the same as 0-59/1 where 0-59 is the range and 1 is the step. The command will run at the first minute in the range (0), then at all successive minutes that are distant from the first by step (1), until the last (59).
Which is why */20 * * *...