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What is a segmentation fault?
...
Segmentation fault is a specific kind of error caused by accessing memory that “does not belong to you.” It’s a helper mechanism that keeps you from corrupting the memory and introducing hard-to-debug memory bugs. Whenever you get a segfault you know you are doing somethin...
tomcat - CATALINA_BASE and CATALINA_HOME variables
...tallation.
Optionally, Tomcat may be configured for multiple instances by defining $CATALINA_BASE for each instance. If multiple instances are not configured, $CATALINA_BASE is the same as $CATALINA_HOME.
See: Apache Tomcat 7 - Introduction
Running with separate CATALINA_HOME and CATALINA_BAS...
What is string_view?
... array or string.
Such a view-handle class could be passed around cheaply by value and would offer cheap substringing operations (which can be implemented as simple pointer increments and size adjustments).
Many uses of strings don't require actual owning of the strings, and the string in question...
SecItemAdd and SecItemCopyMatching returns error code -34018 (errSecMissingEntitlement)
...tiple
possible causes:
Some instances of the problem are caused by incorrect
app signing. You can easily distinguish this case because the problem
is 100% reproducible.
Some instances of the problem are caused by a
bug in how iOS supports app development (r. 23,991,853). Debugg...
POST JSON fails with 415 Unsupported media type, Spring 3 mvc
...son',
'success': callback
});
};
The Content-Type header is used by @RequestBody to determine what format the data being sent from the client in the request is. The accept header is used by @ResponseBody to determine what format to sent the data back to the client in the response. That's w...
Using IQueryable with Linq
...es (which is what Enumerable uses).
The expression trees can be inspected by your chosen LINQ provider and turned into an actual query - although that is a black art in itself.
This is really down to the ElementType, Expression and Provider - but in reality you rarely need to care about this as a ...
Repeat each row of data.frame the number of times specified in a column
... 1:2]
The code for data.table is a tad cleaner:
# convert to data.table by reference
setDT(df)
df.expanded <- df[rep(seq(.N), freq), !"freq"]
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Is there a CSS parent selector?
...apply to the li tag */ }
However, as of 2020, this is still not supported by any browser.
In the meantime, you'll have to resort to JavaScript if you need to select a parent element.
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Can PHP cURL retrieve response headers AND body in a single request?
...es servers send some body with 302 response, but it will be anyway ignored by browsers, so far, why curl should handle this?)
– msangel
Apr 8 '14 at 14:37
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Java Try Catch Finally blocks without Catch
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@jyw That is what I meant by the first item in the list above.
– Peter Lawrey
May 3 '17 at 7:34
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