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What does appending “?v=1” to CSS and Javascript URLs in link and script tags do?
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@Free - A cache control header sent yesterday can't tell the client the file changed today (the client won't even check), a URL can. Can you explain what I'm missing there?
– Nick Craver♦
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How can I call controller/view helper methods from the console in Ruby on Rails?
...t;"
ActionController::Base.helpers.image_tag('logo.png') #=> "<img alt=\"Logo\" src=\"/images/logo.png\" />"
Render:
views = Rails::Application::Configuration.new(Rails.root).paths["app/views"]
views_helper = ActionView::Base.new views
views_helper.render 'myview/mytemplate'
views_help...
Haskell composition (.) vs F#'s pipe forward operator (|>)
...osition operator << but I think the F# community tends to use points-free style less than the Haskell community.
Language differences: I don't know enough about both languages to compare, but perhaps the rules for generalizing let-bindings are sufficiently different as to affect this. For ex...
Use Font Awesome Icons in CSS
...wesome v5 uses other font names than older versions:
For FontAwesome v5, Free Version, use: font-family: "Font Awesome 5 Free"
For FontAwesome v5, Pro Version, use: font-family: "Font Awesome 5 Pro"
Note that you should set the same font-weight property, too (seems to be 900).
Another way to fi...
SQL Server: Filter output of sp_who2
...ly add any ORDER BY or WHERE clauses you like to get meaningful output.
Alternatively, you might consider using Activity Monitor in SSMS (Ctrl + Alt + A) as well
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Difference between JVM and HotSpot?
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OpenJDK (Open Java Development Kit) is a free and open source implementation of the Java Platform, Standard Edition (Java SE).The openjdk is a project started by Sun Microsystems, nowadays care by many companies and the community for build a Java Development Kit abs...
可重入函数、不可重入函数及线程安全 - C/C++ - 清泛网 - 专注C/C++及内核技术
...重入函数：
(1) 使用了静态数据结构;
(2) 调用了malloc或free;
(3) 调用了标准I/O函数;标准io库很多实现都以不可重入的方式使用全局数据结构。
(4) 进行了浮点运算.许多的处理器/编译器中，浮点一般都是不可重入的 (浮点运算大...
How to use a WSDL file to create a WCF service (not make a call)
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Check out this SO answer for info on downloading the wsdl and xsd in a format that svcutil will like. stackoverflow.com/questions/286657/…
– Brett Widmeier
Jun 19 '12 at 14:50
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Changing the image source using jQuery
...his can work
<img id="dummyimage" src="http://dummyimage.com/450x255/" alt="" />
<button id="changeSize">Change Size</button>
$(document).ready(function() {
var flag = 0;
$("button#changeSize").click(function() {
if (flag == 0) {
$("#dummyimage").attr...
Macro vs Function in C
...s://stackoverflow.com/a/24837037/432509.
They can optionally include local info, such as debug strings:(__FILE__, __LINE__, __func__). check for pre/post conditions, assert on failure, or even static-asserts so the code won't compile on improper use (mostly useful for debug builds).
Inspect input ar...