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Given an emacs command name, how would you find key-bindings ? (and vice versa)
...ut this function having a docstring seems to suggest otherwise. Anyone considering use of where-is-internal should first check if remapping keys instead can achieve their goal.
An alternative for finding the keys that are bound to a specific command (e.g., forward-char) is substitute-command-keys (...
mysql - how many columns is too many?
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It's considered too many once it's above the maximum limit supported by the database.
The fact that you don't need every column to be returned by every query is perfectly normal; that's why SELECT statement lets you explicitly name t...
How do I check if a string is valid JSON in Python?
In Python, is there a way to check if a string is valid JSON before trying to parse it?
4 Answers
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What's the difference between “Write-Host”, “Write-Output”, or “[console]::WriteLine”?
...ost ("count=" + $count)
# or
write-host "count=$count"
BTW - Watch this video of Jeffrey Snover explaining how the pipeline works. Back when I started learning PowerShell I found this to be the most useful explanation of how the pipeline works.
...
Return type of '?:' (ternary conditional operator)
...ve to implicitly promote the type of x to match the type of y (since both sides of : are not of the same type), and with that it has to create a temporary.
What does the standard say? (n1905)
Expressions 5.17 Assignment and compound assignment operators
5.17/3
If the second and third operand ...
What are static factory methods?
...
We avoid providing direct access to database connections because they're resource intensive. So we use a static factory method getDbConnection that creates a connection if we're below the limit. Otherwise, it tries to provide a "s...
Best way to get child nodes
...ike this <td\n\t>content</td>. As you might do with XML, to avoid excess whitespace being regarded as part of the data (or DOM, in this case). Why would whitespace inside a tag be included in the DOM?
– Elias Van Ootegem
Apr 30 '12 at 10:42
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Local variables in nested functions
...ets the cat.
dog: Mary pets the cat.
cat: Mary pets the cat.
But if we avoid creating a list() first:
>>> for name, f in get_petters():
... print(name + ":", f())
cow: Mary pets the cow.
dog: Mary pets the dog.
cat: Mary pets the cat.
What's going on? Why does this subtle difference ...
.NET 4.0 has a new GAC, why?
...nct Global Assembly Cache (GAC), you will have to manage each of them individually.
In .NET Framework 4.0, the GAC went through a few changes. The GAC was split into two, one for each CLR.
The CLR version used for both .NET Framework 2.0 and .NET Framework 3.5 is CLR 2.0. There was no need in the p...
Java to Clojure rewrite
... "Clojure way" is to clearly separate out mutable state and develop pure (side-effect free) functions. You probably know all this already :-)
Anyway, this philosophy tends to lead towards something of a "bottom up" development style where you focus the initial efforts on building the right set of t...