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How to take the first N items from a generator or list in Python? [duplicate]
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and if you want to take the five that follows each time you can use: iter(array) instead of array.
– yucer
Jun 15 '16 at 13:57
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What does [].forEach.call() do in JavaScript?
I was looking at some snippets of code, and I found multiple elements calling a function over a node list with a forEach applied to an empty array.
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Performing user authentication in Java EE / JSF using j_security_check
...regarding user authentication for a web application making use of JSF 2.0 (and if any components do exist) and Java EE 6 core mechanisms (login/check permissions/logouts) with user information hold in a JPA entity. The Oracle Java EE tutorial is a bit sparse on this (only handles servlets).
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How do I partially update an object in MongoDB so the new object will overlay / merge with the exist
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If I understand the question correctly, you want to update a document with the contents of another document, but only the fields that are not already present, and completely ignore the fields that are already set (even if to another valu...
Copying a HashMap in Java
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Maybe i'm not understanding this but I don't need a copy of the map. I need a copy of the class that holds the map. ? There for myObjectListB has to be a class derived from MyojbectsList not a hashmap.
– user691305
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Get yesterday's date using Date [duplicate]
... through 365/366 days for current year. get previous date for each of them and see second delta between two dates. You don't need to run it for each day may be pick up selective corner dates (1st Jan, 1st Mar, 28 or 29th Feb)
– Jigar Joshi
Feb 20 '18 at 19:15
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PostgreSQL DISTINCT ON with different ORDER BY
...ll row that contains the most recent purchased product for each address_id and that result sorted by purchased_at then you're trying to solve a greatest N per group problem which can be solved by the following approaches:
The general solution that should work in most DBMSs:
SELECT t1.* FROM purcha...
Hidden features of HTML
...st it with HTTP.
This prevents that awful "This Page Contains Both Secure and Non-Secure Items" error message in IE, keeping all your asset requests within the same protocol.
Caveat: When used on a <link> or @import for a stylesheet, IE7 and IE8 download the file twice. All other uses, howev...
MySQL Insert into multiple tables? (Database normalization?)
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No, you can't insert into multiple tables in one MySQL command. You can however use transactions.
BEGIN;
INSERT INTO users (username, password)
VALUES('test', 'test');
INSERT INTO profiles (userid, bio, homepage)
VALUES(LAST_INSERT_ID(),'Hello world!', 'http://www.stackoverflow...
Azure SQL Database Bacpac Local Restore
...Management Studio 2012
Right click on the Connection > Databases node and select "Import Data-tier application..."
Select "Next" on the introduction step.
Browse, or connect to a storage account where backups are kept.
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