大约有 40,000 项符合查询结果（耗时：0.0728秒） [XML]
Ruby's ||= (or equals) in JavaScript?
... which evaluates its right operand if lVal is a falsy value.
Falsy values include e.g null, false, 0, "", undefined, NaN
x = x || 1
share
|
improve this answer
|
follow
...
Run command on the Ansible host
... aware that it does not make sense to delegate all tasks, debug, add_host, include, etc always get executed on the controller. Using this with the ‘serial’ keyword to control the number of hosts executing at one time is also a good idea:
---
- hosts: webservers
serial: 5
tasks:
- name:...
How do I remove duplicates from a C# array?
...ing tested and working code will remove duplicates from an array. You must include the System.Collections namespace.
string[] sArray = {"a", "b", "b", "c", "c", "d", "e", "f", "f"};
var sList = new ArrayList();
for (int i = 0; i < sArray.Length; i++) {
if (sList.Contains(sArray[i]) == false...
find() with nil when there are no records
...r 5) generates dynamic find_by_... finders for every attribute a model has including :id. So, Challenge.find_by_id(10) should work regardless of Rails version.
– Arta
Jul 9 '17 at 18:34
...
Prevent BODY from scrolling when a modal is opened
...
Thanks for also including the code for preventing the page from jumping left/right when showing/hiding modals. This was extremely useful and I verified it fixes an issue I was having on Safari on an iPhone 5c running iOS 9.2.1.
...
How can you disable Git integration in Visual Studio 2013 permanently?
...his with one other thing: I updated my VisualStudio start menu shortcut to include this command line flag: /ResetSettings "C:\Users\myuserid\Documents\Visual Studio 2015\Settings\CurrentSettings.vssettings". According to the command line reference, this setting "Restores the IDE's default settings,...
Find all controls in WPF Window by type
...VisualTreeHelper to LogicalTreeHelpers will cause invisible elements to be included too.
– Mathias Lykkegaard Lorenzen
Jun 4 '12 at 5:47
11
...
Less aggressive compilation with CSS3 calc
...
There's a tidier way to include variables inside the escaped calc, as explained in this post: CSS3 calc() function doesn't work with Less #974
@variable: 2em;
body{ width: calc(~"100% - @{variable} * 2");}
By using the curly brackets you don't n...
How do I mock the HttpContext in ASP.NET MVC using Moq?
...
Links are broken - please include the code in your answer
– Hades
Jan 6 at 10:12
...
How to import a module given its name as string?
... module.hello().
If you want to import the members (e.g, "hello") you can include module/pluginX in the in-memory list of modules:
sys.modules[module_name] = module
from pluginX import hello
hello()
Import a package
Importing a package (e.g., pluginX/__init__.py) under your current dir is actu...