大约有 48,000 项符合查询结果（耗时：0.0504秒） [XML]
Is storing a delimited list in a database column really that bad?
...
In addition to violating First Normal Form because of the repeating group of values stored in a single column, comma-separated lists have a lot of other more practical problems:
Can’t ensure that each value is the right data type: no way to prevent 1,2,3,banana,5
Can’t use foreign key co...
Check whether user has a Chrome extension installed
...ading this file, then the extension is not installed.
// Code from https://groups.google.com/a/chromium.org/d/msg/chromium-extensions/8ArcsWMBaM4/2GKwVOZm1qMJ
function detectExtension(extensionId, callback) {
var img;
img = new Image();
img.src = "chrome-extension://" + extensionId + "/test...
Extract a substring from a string in Ruby using a regular expression
...n a one-element array (because when used with a regex containing capturing groups, scan creates an array containing the captures for each match). last gives you the last of those arrays and first then gives you the string in it.
...
What is the main difference between Inheritance and Polymorphism?
...eful when you want to have student, driver, teacher etc. as Person and you group them under a List or something. So when you call 'read' for all, everyone calls their own 'read' method.
– savante
Jun 22 at 19:44
...
pass **kwargs argument to another function with **kwargs
...ingle value. You need to use keyword expansion if you want to pass it as a group of keyword arguments.
share
|
improve this answer
|
follow
|
...
ASP.NET MVC 404 Error Handling [duplicate]
...e gets too big (lots of Controllers, Modelds and Views), you can logically group them in Areas. For more information see msdn.microsoft.com/en-us/library/ee671793(v=vs.100).aspx
– Marco
Jan 21 '14 at 16:58
...
Studies on optimal code width?
...t parses completely differently than a programming language. You can often group a line of code as separate from the rest, be it a long conditional or a combination of long methods and classes. Combine this with indentation and the comparison between the two languages becomes absurd. I have no doubt...
Check a radio button with javascript
...s with the same name. and I think that's what most people need to select a group of radios by name and then based on value check one of them.
– Ndm Gjr
Apr 11 '19 at 23:57
...
How to handle invalid SSL certificates with Apache HttpClient? [duplicate]
...
FYI I try to group this tips into a single helper : UnsafeSSLHelper. You could try it using Apache HttpClient 4.3.6. UnsafeSSLHelper unsafeSSLHelper = new UnsafeSSLHelper(); CloseableHttpClient client = HttpClientBuilder.create().setSs...
How to change the default GCC compiler in Ubuntu?
...
Now, there is gcc-4.9 available for Ubuntu/precise.
Create a group of compiler alternatives where the distro compiler has a higher priority:
root$ VER=4.6 ; PRIO=60
root$ update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-$VER $PRIO --slave /usr/bin/g++ g++ /usr/bin/g++-$VER
...