大约有 40,000 项符合查询结果（耗时：0.0539秒） [XML]
How to set default values in Rails?
... also need to specify the column type: change_column :people, :last_name, :string, default: "Doe"
– GoBusto
Apr 24 '15 at 10:37
...
Compiling with cython and mingw produces gcc: error: unrecognized command line option '-mno-cygwin'
...e. I followed Ignacio's instructions verbatim. Replaced 4 instances of the string "-mno-cygwin" with "" in the cygwincompile.py file
– Ram Narasimhan
Oct 27 '12 at 20:20
4
...
Hidden Features of Visual Studio (2005-2010)?
...
For extra points you can make a local variable asignment in the when hit button. { localVariable = 1.0f } or increase values by { staticVariable += 0.1f }
– Charles Beattie
May 10 '10 at 14:...
Basic HTTP authentication with Node and Express 4
...' ')[1] || ''
const [login, password] = Buffer.from(b64auth, 'base64').toString().split(':')
// Verify login and password are set and correct
if (login && password && login === auth.login && password === auth.password) {
// Access granted...
return next()
}
...
Ternary Operators in JavaScript Without an “Else”
...
No i know, i just like writing conditionals without extras such as if(){}else{} when its equal to simply ?:;
– Oscar Godson
May 28 '10 at 22:05
3
...
Adding iOS UITableView HeaderView (not section header)
...o do that, you need to be able to calculate the height of the cell given a string, and pass that value in for heightForRowAtIndexPath. You can use NSString's method sizeWithFont:constrainedToSize: function to figure out the height of the text when constrained to a size.
– Mark
...
How do I load an HTML page in a using JavaScript?
...then feeds it to the innerHTML of your container element.
/**
* @param {String} url - address for the HTML to fetch
* @return {String} the resulting HTML string fragment
*/
async function fetchHtmlAsText(url) {
return await (await fetch(url)).text();
}
// this is your `load_home() functi...
Is #pragma once a safe include guard?
...
To use include guards, there is the extra requirement that you must define a new symbol such as #ifndef FOO_BAR_H, normally for a file such as "foo_bar.h". If you later rename this file, should you adjust the include guards accordingly to be consistent with thi...
How do you access a website running on localhost from iPhone browser
...ption key while clicking on the Wi-Fi menu bar item. This gives a bunch of extra information about your connection including your local IP address.
– William Robertson
Feb 23 '16 at 23:04
...
Determine what attributes were changed in Rails after_save callback?
... Works great! Also to be noted, the result of self.changed is an array of strings! (Not symbols!) ["attr_name", "other_attr_name"]
– LukeS
Mar 2 '17 at 23:18
add a comment
...