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What is the difference between save and insert in Mongo DB?
...sert : false : Nothing happens when no such document exist
upsert : true : New doc gets created with contents equal to query params and update params
save : Doesn't allow any query-params. if _id exists and there is a matching doc with the same _id, it replaces it. When no _id specified/no matching...
Easiest way to convert a List to a Set in Java
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Set<Foo> foo = new HashSet<Foo>(myList);
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JPA eager fetch does not join
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JPA doesn't provide any specification on mapping annotations to select fetch strategy. In general, related entities can be fetched in any one of the ways given below
SELECT => one query for root entities + one query for related mapped e...
Base64 Java encode and decode a string [duplicate]
...e64.encodeBase64(str.getBytes());
System.out.println("encoded value is " + new String(bytesEncoded));
// Decode data on other side, by processing encoded data
byte[] valueDecoded = Base64.decodeBase64(bytesEncoded);
System.out.println("Decoded value is " + new String(valueDecoded));
Hope this ans...
Application Crashes With “Internal Error In The .NET Runtime”
...might be using. Suspect environmental problems if there is no obvious candidate, misbehaving malware scanners are notorious. If it repeats very poorly then suspect hardware problems like soft RAM errors.
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How to change value of object which is inside an array using JavaScript or jQuery?
... }
}
and use it like
var projects = [ ... ];
changeDesc ( 'jquery-ui', 'new description' );
UPDATE:
To get it faster:
var projects = {
jqueryUi : {
value: 'lol1',
desc: 'lol2'
}
};
projects.jqueryUi.desc = 'new string';
(In according to Frédéric's comment you shouldn...
What's the need of array with zero elements?
...y sure the kernel developers are constantly updating old code according to new standards or new optimizations. It's just too big to make sure everything is updated!
– Shahbaz
Feb 1 '13 at 14:51
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Reverse a string in Java
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You can use this:
new StringBuilder(hi).reverse().toString()
Or, for versions earlier than JDK 1.5, use java.util.StringBuffer instead of StringBuilder — they have the same API. Thanks commentators for pointing out that StringBuilder is pr...
Rename a dictionary key
...there a way to rename a dictionary key, without reassigning its value to a new name and removing the old name key; and without iterating through dict key/value?
In case of OrderedDict, do the same, while keeping that key's position.
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Do you have to restart apache to make re-write rules in the .htaccess take effect?
... for decentralized management of configuration via special files placed inside the web tree. The special files are usually called .htaccess, but any name can be specified in the AccessFileName directive... Since .htaccess files are read on every request, changes made in these files take immediate ef...