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Delete column from SQLite table
...wing query:
CREATE TABLE table_name (Column_1 TEXT,Column_2 TEXT);
=>Now insert the data into table_name from existing_table with the following query:
INSERT INTO table_name (Column_1,Column_2) FROM existing_table;
=>Now drop the existing_table by following query:
DROP TABLE existing_ta...
How to check if object property exists with a variable holding the property name?
...otypeOf(yoshi, hattori);
if ("sneak" in yoshi)
console.log("Yoshi can now sneak");
if (!("creep" in hattori))
console.log("Hattori cannot creep");
Object.setPrototypeOf(hattori, kuma);
if ("creep" in hattori)
console.log("Hattori can now creep");
if ("creep" in yoshi)
console.log(...
I change the capitalization of a directory and Git doesn't seem to pick up on it
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for some reason it duplicated all the files, now I have both the original versions and the ones with capitalization changed...
– Salatiel
Apr 1 at 1:49
...
When should I mock?
...er interface. Before we pass a mock MailServer, we "train" it, so that it knows what method calls to expect and what return values to return. At the end, the mock object asserts, that all expected methods were called as expected.
This sounds good in theory, but there are also some downsides.
Mock sh...
How do I update/upsert a document in Mongoose?
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Mongoose now supports this natively with findOneAndUpdate (calls MongoDB findAndModify).
The upsert = true option creates the object if it doesn't exist. defaults to false.
var query = {'username': req.user.username};
req.newData.u...
Responsively change div size keeping aspect ratio [duplicate]
...e put together a demo here: http://codepen.io/tcmulder/pen/iqnDr
EDIT:
Now, bumming off of Isaac's idea, it's easier in modern browsers to simply use vw units to force aspect ratio (although I wouldn't also use vh as he does or the aspect ratio will change based on window height).
So, this simp...
Prevent automatic browser scroll on refresh
... distinguish between user initiated scroll and browser initiated. I don't know how to do this, but as I recall it is possible.
– mrtsherman
Aug 12 '11 at 5:12
1
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Extract first item of each sublist
...t2[0]
lst2 = [['a', 1, 'x']]
lst2[0] = ['a', 1, 'x']
Please let me know if I am incorrect.
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Redirecting EC2 Elastic Load Balancer from HTTP to HTTPS
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AWS Application Load Balancers now support native HTTP to HTTPS redirect.
To enable this in the console, do the the following:
Go to your Load Balancer in EC2 and tab "Listeners"
Select "View/edit rules" on your HTTP listener
Delete all rules except for...
How to impose maxlength on textArea in HTML using JavaScript
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I know you want to avoid jQuery, but as the solution requires JavaScript, this solution (using jQuery 1.4) is the most consise and robust.
Inspired by, but an improvement over Dana Woodman's answer:
Changes from that answer a...