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Ant task to run an Ant target only if a file exists?
...
Available and Condition
<target name="check-abc">
<available file="abc.txt" property="abc.present"/>
</target>
<target name="do-if-abc" depends="check-abc" if="abc.present">
...
</target>
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Is there a way to make npm install (the command) to work behind proxy?
...t does not work. Trying to avoid manually downloading all require packages and installing.
29 Answers
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Get value of c# dynamic property via string
...e you have your PropertyInfo (from GetProperty), you need to call GetValue and pass in the instance that you want to get the value from. In your case:
d.GetType().GetProperty("value2").GetValue(d, null);
share
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Convert Float to Int in Swift
...this does not work because these types are not primitives, unlike float s and int s in Objective-C
13 Answers
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Can we append to a {% block %} rather than overwrite?
...al.html" %}
Say you want to include a template in the middle of your page and you'd also like it to add some javascript in a block at the end of the page: calling block.super in the included template will crash.
Cf. Django issues #7324, #12008, #13399 and the related update to the documentation. Cf...
How does autowiring work in Spring?
...
First, and most important - all Spring beans are managed - they "live" inside a container, called "application context".
Second, each application has an entry point to that context. Web applications have a Servlet, JSF uses a el-re...
How to copy text to clipboard/pasteboard with Swift
...nt is plain text, you can just use the string property. It's both readable and writable:
// write to clipboard
UIPasteboard.general.string = "Hello world"
// read from clipboard
let content = UIPasteboard.general.string
(When reading from the clipboard, the UIPasteboard documentation also sugges...
How can I generate a self-signed certificate with SubjectAltName using OpenSSL? [closed]
...
Can someone help me with the exact syntax?
It's a three-step process, and it involves modifying the openssl.cnf file. You might be able to do it with only command line options, but I don't do it that way.
Find your openssl.cnf file. It is likely located in /usr/lib/ssl/openssl.cnf:
$ find /us...
Get the position of a div/span tag
... the page. Basically you have to loop up through all the element's parents and add their offsets together.
function getPos(el) {
// yay readability
for (var lx=0, ly=0;
el != null;
lx += el.offsetLeft, ly += el.offsetTop, el = el.offsetParent);
return {x: lx,y: ly};
}
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How to generate a Dockerfile from an image?
... -sV=1.36 nginx:latest
It will pull the target docker image automaticlaly and export Dockerfile. Parameter -sV=1.36 is not always required.
Reference: https://hub.docker.com/repository/docker/alpine/dfimage
below is the old answer, it doesn't work any more.
$ docker pull centurylink/dockerfile-from...