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[解决]Missing Constraint: Bundle-RequiredExecutionEnvironment: J2SE-1....
...https: www eclipse org downloads 参考：https: www eclipse org forums index php t 1089568 原因：eclipse版本太老了，java版本太新了不匹配导致。
解决：安装最新的eclipse，地址：https://www.eclipse.org/downloads/
参考：https://www.eclipse.org/forums/index.php/t...
[解决]Missing Constraint: Bundle-RequiredExecutionEnvironment: J2SE-1....
...https: www eclipse org downloads 参考：https: www eclipse org forums index php t 1089568 原因：eclipse版本太老了，java版本太新了不匹配导致。
解决：安装最新的eclipse，地址：https://www.eclipse.org/downloads/
参考：https://www.eclipse.org/forums/index.php/t...
[解决]Missing Constraint: Bundle-RequiredExecutionEnvironment: J2SE-1....
...https: www eclipse org downloads 参考：https: www eclipse org forums index php t 1089568 原因：eclipse版本太老了，java版本太新了不匹配导致。
解决：安装最新的eclipse，地址：https://www.eclipse.org/downloads/
参考：https://www.eclipse.org/forums/index.php/t...
[解决]Missing Constraint: Bundle-RequiredExecutionEnvironment: J2SE-1....
...https: www eclipse org downloads 参考：https: www eclipse org forums index php t 1089568 原因：eclipse版本太老了，java版本太新了不匹配导致。
解决：安装最新的eclipse，地址：https://www.eclipse.org/downloads/
参考：https://www.eclipse.org/forums/index.php/t...
How to get label of select option with jQuery?
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$("select#selectbox option:eq(0)").text()
The 0 index in the "option:eq(0)" can be exchanged for whichever indexed option you'd like to retrieve.
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What are the basic rules and idioms for operator overloading?
...swers according to votes, rather than the time they were given, here's an index of the answers in the order in which they make most sense:
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git revert back to certain commit [duplicate]
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You can revert all your files under your working directory and index by typing following this command
git reset --hard <SHAsum of your commit>
You can also type
git reset --hard HEAD #your current head point
or
git reset --hard HEAD^ #your previous head point
Hope it help...
How to get row from R data.frame
...anted
x[1,]==y
This page (from this useful site) has good information on indexing like this.
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Convert JS Object to form data
...me || '';
if (typeof data === 'object'){
$.each(data, function(index, value){
if (name == ''){
appendFormdata(FormData, value, index);
} else {
appendFormdata(FormData, value, name + '['+index+']');
}
})
} el...
Validate uniqueness of multiple columns
...r, one should add a unique constraint to db table. You can set it with add_index helper for one (or multiple) field(s) by running the following migration:
class AddUniqueConstraints < ActiveRecord::Migration
def change
add_index :table_name, [:field1, ... , :fieldn], unique: true
end
end
...