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Java “params” in method signature?
...s everyone using the method to pass as many parameters of that type as the caller wants.
3 Answers
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Difference between filter and filter_by in SQLAlchemy
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Be careful when using .filter. a query like id=12345, query(users).filter(id == id) will not filter on users.id. Instead, it will evaluate id == id as True and return all users. You need to use .filter(users.id == id) (as demoed above). I made this mistake earlier toda...
Where does this come from: -*- coding: utf-8 -*-
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This is so called file local variables, that are understood by Emacs and set correspondingly. See corresponding section in Emacs manual - you can define them either in header or in footer of file
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entity object cannot be referenced by multiple instances of IEntityChangeTracker. while adding relat
... @Maritim it depends on the usage. In Web Applications, its typically one roundtrip. In Desktop Applications, you might also use one per Form (what ever, it just represents one unit of work) per Thread (because DbContext is not guaranteed to be threadsafe).
– LuckyLi...
How does OpenID authentication work?
...t. It has explained each and every steps to implement OpenID.
Another one called [Jan Rain] (http://janrain.com/openid-enabled/)
Another great step-by-step tutorial by Remy Sharp for OpenID
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How to programmatically display version/build number of target in iOS app?
How can I programmatically get the value of the target version , like in the image below?
6 Answers
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How can I do SELECT UNIQUE with LINQ?
...r ordering by the entire object/record. An extension method would still be calling a delegate for no reason.
– NetMage
Dec 21 '16 at 19:41
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What is a “Bitmap heap scan” in a query plan?
...ist of disk pages, and grab every applicable row in each one (hence the so-called recheck cond you see in query plans).
Note, as an aside, how clustering/row order affects the associated costs with either method. If rows are all over the place in a random order, a bitmap index will be cheaper. (And...
Inserting a text where cursor is using Javascript/jquery
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Use this, from here:
function insertAtCaret(areaId, text) {
var txtarea = document.getElementById(areaId);
if (!txtarea) {
return;
}
var scrollPos = txtarea.scrollTop;
var strPos = 0;
var br = ((txtarea.selectionStart || txtarea.selectionStart == '...
Clear text from textarea with selenium
...that the proper error message appears when text in certain fields are invalid. One check for validity is that a certain textarea element is not empty.
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