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What's the best way of implementing a thread-safe Dictionary?
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Unfortunately it's not a lock-free solution, so it's useless in SQL Server CLR safe assemblies. You'd need something like what's described here: cse.chalmers.se/~tsigas/papers/Lock-Free_Dictionary.pdf or perhaps this implementation: github.com/hackcraft/...
How to get name of exception that was caught in Python?
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You can also use sys.exc_info(). exc_info() returns 3 values: type, value, traceback. On documentation: https://docs.python.org/3/library/sys.html#sys.exc_info
import sys
try:
foo = bar
except Exception:
exc_type, value, traceback = sys.exc_...
is it possible to evenly distribute buttons across the width of an android linearlayout
...th that is greater than 0dp because it has wrap_content instead making the free space left to divide less than 100% because the text takes space. The result will be that they do get 50% of the free space left but the text already took some space so the TextView will have well over 50% of the total s...
Asynchronous Requests with Python requests
...op = asyncio.get_event_loop()
def do_thing(params):
async def get_rpc_info_and_do_chores(id):
# do things
response = perform_grpc_call(id)
do_chores(response)
async def get_httpapi_info_and_do_chores(id):
# do things
response = requests.get(URL)
...
Hashset vs Treeset
...eadSet(), and tailSet() etc
Important points:
Both guarantee duplicate-free collection of elements
It is generally faster to add elements to the HashSet and then convert the collection to a TreeSet for a duplicate-free sorted traversal.
None of these implementations are synchronized. That is if ...
.NET - Dictionary locking vs. ConcurrentDictionary
...y using TryGetValue).
So do use them, but don't think that it gives you a free pass to ignore all concurrency issues. You still need to be careful.
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How to find out which processes are using swap space in Linux?
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funny though, I get Overall swap used: 260672 KB, while free shows 738932 as used...
– Doncho Gunchev
Dec 18 '12 at 16:13
25
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How can I get a JavaScript stack trace when I throw an exception?
... alwaysShowURL: false,
enabled: true,
showInfo: true
},
stackTrace: {
enabled: true,
collapsed: true,
ignoreDebugFuncs: true,
spacing: false
}
}
};
//...
How to validate an email address in PHP
...by sending a confirmation mail.
Now that you have your easy answer feel free to read on about email address validation if you care to learn or otherwise just use the fast answer and move on. No hard feelings.
Trying to validate an email address using a regex is an "impossible" task. I would go ...
Should we use Nexus or Artifactory for a Maven Repo?
...ying from Maven works out of the box (no need for WebDAV hacks, etc).
it's free
You can redirect access paths (i.e. some broken pom.xml requires "a.b.c" from "xxx"). Instead of patching the POM, you can fix the bug in Nexus and redirect the request to the place where the artifact really is.
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