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WPF Data Binding and Validation Rules Best Practices
...eate custom ValidationRules, but I am wondering if this would be overkill for my needs.
6 Answers
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How to wait until an element exists?
I'm working on an Extension in Chrome, and I'm wondering: what's the best way to find out when an element comes into existence? Using plain javascript, with an interval that checks until an element exists, or does jQuery have some easy way to do this?
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How do I get an empty array of any size in python?
...If by "array" you actually mean a Python list, you can use
a = [0] * 10
or
a = [None] * 10
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Is there a pattern for initializing objects created via a DI container
...u need a run-time value to construct a particular dependency, Abstract Factory is the solution.
Having Initialize methods on the interfaces smells of a Leaky Abstraction.
In your case I would say that you should model the IMyIntf interface on how you need to use it - not how you intent to create i...
Why is exception.printStackTrace() considered bad practice?
...tem.err PrintStream. The System.err stream and the underlying standard "error" output stream of the JVM process can be redirected by
invoking System.setErr() which changes the destination pointed to by System.err.
or by redirecting the process' error output stream. The error output stream may be r...
Why both no-cache and no-store should be used in HTTP response?
...revent user-info leaking, only "no-cache" in response is not enough. "no-store" is also necessary.
11 Answers
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await vs Task.Wait - Deadlock?
...il the task completes. So the current thread is literally blocked waiting for the task to complete. As a general rule, you should use "async all the way down"; that is, don't block on async code. On my blog, I go into the details of how blocking in asynchronous code causes deadlock.
await will asyn...
Scheduling recurring task in Android
...g task of sending presence to a dedicated server as long as the app is in foreground.
5 Answers
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How do you use an identity file with rsync?
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You may want to use ssh-agent and ssh-add to load the key into memory. ssh will try identities from ssh-agent automatically if it can find them. Commands would be
eval $(ssh-agent) # Create agent and environment variables
ssh-add ~/.ssh/1234-identity
ssh-agent is a user daemon which hol...
how to find host name from IP with out login to the host
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Use nslookup
nslookup 208.77.188.166
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Non-authoritative answer:
166.188.77.208.in-addr.arpa name = www.example.com.
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