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What is the difference between background and background-color
...ristianVarga's link: The 'background' property is a shorthand property for setting the individual background properties (i.e., 'background-color', 'background-image', 'background-repeat', 'background-attachment' and 'background-position') at the same place in the style sheet. Given a valid declarati...
Rails detect if request was AJAX
...te: true calls in newer Rails versions, as the necessary headers don't get set.
– Roland Studer
May 27 at 18:04
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Stacking DIVs on top of each other?
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I think in that case you want to set "top: 0; left: 0;" on your div that has "position: relative". Definitely test IE6 on that, though as I can't say for certain that it'll work.
– Eric Wendelin
Dec 15 '09 at 19:25
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Aggregate / summarize multiple variables per group (e.g. sum, mean)
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Using the data.table package, which is fast (useful for larger datasets)
https://github.com/Rdatatable/data.table/wiki
library(data.table)
df2 <- setDT(df1)[, lapply(.SD, sum), by=.(year, month), .SDcols=c("x1","x2")]
setDF(df2) # convert back to dataframe
Using the plyr package
req...
Android Studio with Google Play Services
...All those answers are wrong, since the release of gradle plugin v0.4.2 the setup of google play services under android studio is straight forward. You don't need to import any jar or add any project library nor add any new module under android studio. What you have to do is to add the correct depend...
Eclipse returns error message “Java was started but returned exit code = 1”
...nto problems in your Eclipse wondering what you might have changed. Better set it to a specific folder in your eclipse.ini to be certain.
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IntelliJ inspection gives “Cannot resolve symbol” but still compiles code
... that I had to tell IDEA to "import my Maven project using Maven 3". Under Settings->Maven->Importing. Discovered after a long email exchange with support@jetbrains.com.
– pastafarian
Mar 12 '13 at 1:22
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Best way to work with transactions in MS SQL Server Management Studio
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After excuting ROLLBACK TRANSACTION @@TRANCOUNT is set back to 0. By that the COMMIT TRANSACTION will not be executed. See msdn.microsoft.com/de-de/library/ms187967.aspx
– Christoph Brückmann
Nov 1 '16 at 15:23
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How to pass a view's onClick event to its parent on Android?
...View in a layout whos background is a Selector. And the TextView's text is set to Spanned from HTML.
Then I set the TextView with the LinkMovementMethod.
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Generating HTML email body in C#
...ou want to programmatically include sections of HTML and/or loop through a set of items that need rendering.
– AnthonyWJones
May 20 '09 at 9:25
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