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Evaluate if list is empty JSTL
...at can be used to determine
whether a value is null or empty.
<c:if test="${empty myObject.featuresList}">
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In Python, how does one catch warnings as if they were exceptions?
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To quote from the python handbook (27.6.4. Testing Warnings):
import warnings
def fxn():
warnings.warn("deprecated", DeprecationWarning)
with warnings.catch_warnings(record=True) as w:
# Cause all warnings to always be triggered.
warnings.simplefilter("...
Is there any advantage of using map over unordered_map in case of trivial keys?
...nsure that others notice the other numbers besides the time as well: Those tests were done with 4 byte objects/datastructures aka an int. If you store something that requires heavier hashing or is larger (making the copy operations heavier), the standard map might quickly have an advantage!
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How does the Windows Command Interpreter (CMD.EXE) parse scripts?
...ise, attempt to parse out an internal command and execute.
The following tests are made to determine if an unquoted command token represents an internal command:
If the command token exactly matches an internal command, then execute it.
Else break the command token before the first occurrence of...
How does one make random number between range for arc4random_uniform()?
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Yes, I've just tested and to get a random colour (i.e. wanting a random value between and including 0 - 255), I used: "arc4random_uniform(256) + 0"
– Chris Allinson
Feb 19 '17 at 19:07
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Why does a return in `finally` override `try`?
...y a higher level try-catch, then the finally block won't execute. Here's a test case jsfiddle.net/niallsmart/aFjKq. This issue was fixed in IE8.
– Niall Smart
Jun 17 '11 at 20:46
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Hook up Raspberry Pi via Ethernet to laptop without router? [closed]
...ase for most recent hardware, including for example the 2012 Lenovo T430 I tested with, which has an "Intel® 82579LM Gigabit Network Connection" which documents support for Auto MDI-X.
Now you can also:
access the Internet from the PI through your Ubuntu's Wifi connection
open a VNC to get rid o...
Lodash - difference between .extend() / .assign() and .merge()
...t level
Only _.assign and _.extend will overwrite a value with undefined
Tests
They all handle members at the root in similar ways.
_.assign ({}, { a: 'a' }, { a: 'bb' }) // => { a: "bb" }
_.merge ({}, { a: 'a' }, { a: 'bb' }) // => { a: "bb" }
_.defaults ({}, { a: 'a' }, { a...
Shards and replicas in Elasticsearch
...s we have three nodes here? If all these nodes have the same cluster.name: test property set, will it make a Cluster name test which would have three nodes?
– TheCoder
Jul 20 '19 at 15:42
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TFS: Updating branch with changes from main
...ed, click Next
The next step has you pick a Version type. The default, Latest Version is obviously straightforward and self-explanatory: you would be brining all changes since your branch was created from the mainline down into your branch. The other choices are straightforward, but a tutorial ex...