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Delete empty lines using sed
...er solutions can preserve the original colors. Compare unbuffer apt search foo | grep . to unbuffer apt search foo | grep -v ^$
– wisbucky
Apr 25 '19 at 23:12
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Variable name as a string in Javascript
...and be able to retrieve both.
var obj = { myFirstName: 'John' };
obj.foo = 'Another name';
for(key in obj)
console.log(key + ': ' + obj[key]);
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What's the difference between a proc and a lambda in Ruby?
...using return in a proc returns from the enclosing block.
lambda { return :foo }.call # => :foo
return # => LocalJumpError: unexpected return
Proc.new { return :foo }.call # => LocalJumpError: unexpected return
So for most quick uses they're the same, but if you want automatic strict argu...
How do you create a Distinct query in HQL
...anged to protect identities)
String queryString = "select distinct f from Foo f inner join foo.bars as b" +
" where f.creationDate >= ? and f.creationDate < ? and b.bar = ?";
return getHibernateTemplate().find(queryString, new Object[] {startDate, endDate, bar});
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Key existence check in HashMap
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Do you ever store a null value? If not, you can just do:
Foo value = map.get(key);
if (value != null) {
...
} else {
// No such key
}
Otherwise, you could just check for existence if you get a null value returned:
Foo value = map.get(key);
if (value != null) {
...
} ...
List vs List
...>
So:
void withWilds( List<? extends Map<String,String>> foo ){}
void noWilds( List<Map<String,String>> foo ){}
void main( String[] args ){
List<HashMap<String,String>> myMap;
withWilds( myMap ); // Works
noWilds( myMap ); // Compiler error
}
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Collapse sequences of white space into a single character and trim string
...ling spaces, and eliminate all of them. it won't deal with "hello foo"
– Brian Postow
Sep 15 '09 at 14:09
2
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Generic htaccess redirect www to non-www
...ut this flag, apache will change the requested URL http://www.example.com/?foo%20bar to http://www.example.com/?foo%2250bar
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Read environment variables in Node.js
...
this also works for assigning variables. process.env.FOO = "foo"; works.
– chicks
Sep 11 '15 at 17:16
16
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http to https apache redirection
...he VirtualHost file. It is the recommended method.
– foochow
Sep 25 '13 at 23:54
4
After changing...