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How to implement a many-to-many relationship in PostgreSQL?
...anguage) statements could look like this:
CREATE TABLE product (
product_id serial PRIMARY KEY -- implicit primary key constraint
, product text NOT NULL
, price numeric NOT NULL DEFAULT 0
);
CREATE TABLE bill (
bill_id serial PRIMARY KEY
, bill text NOT NULL
, billdate date NOT N...
Can an html element have multiple ids?
I understand that an id must be unique within an HTML/XHTML page.
18 Answers
18
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How to use JavaScript variables in jQuery selectors?
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var name = this.name;
$("input[name=" + name + "]").hide();
OR you can do something like this.
var id = this.id;
$('#' + id).hide();
OR you can give some effect also.
$("#" + this.id).slideUp();
If you want to remove the entire element permanently form the page.
$("#" ...
foreach vs someList.ForEach(){}
...INQ extension method that is more specific than ForEach(). See if Where(), Select(), Any(), All(), Max() or one of the many other LINQ methods doesn't already do what you want from the loop.
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Why is it bad style to `rescue Exception => e` in Ruby?
...IFT-ESC), go to the "processes" tab, find your process, right click it and select "End process".
If you are working with someone else's program which is, for whatever reason, peppered with these ignore-exception blocks, then putting this at the top of the mainline is one possible cop-out:
%W/INT Q...
Django queries - id vs pk
When writing django queries one can use both id/pk as query parameters.
2 Answers
2
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Rails Model find where not equal
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In Rails 4.x (See http://edgeguides.rubyonrails.org/active_record_querying.html#not-conditions)
GroupUser.where.not(user_id: me)
In Rails 3.x
GroupUser.where(GroupUser.arel_table[:user_id].not_eq(me))
To shorten the length, you could store GroupUser....
How can I get device ID for Admob
I'm using Eclipse to develop applications for android, and I want to integrate Admob to make money.
The tutorial says I should watch the LogCat to find ID, but where is it?
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Typing Enter/Return key using Python and Selenium?
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JAVA
driver.findElement(By.id("Value")).sendKeys(Keys.RETURN);
OR,
driver.findElement(By.id("Value")).sendKeys(Keys.ENTER);
PYTHON
from selenium.webdriver.common.keys import Keys
driver.find_element_by_name("Value").send_keys(Keys.RETURN)
OR,
drive...
How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting
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Any idea on how to select the parameters a, b, and c?
– recipe_for_disaster
Apr 10 at 15:42
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