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bash assign default value
...
Please look at http://www.tldp.org/LDP/abs/html/parameter-substitution.html for examples
${parameter-default}, ${parameter:-default}
If parameter not set, use default. After the call, parameter is still not set.
Both forms are almost equivalent. The extra : makes a...
Log exception with traceback
... From
http://spyced.blogspot.com/2007/06/workaround-for-sysexcepthook-bug.html
(https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1230540&group_id=5470).
Call once from __main__ before creating any threads.
If using psyco, call psyco.cannotcompile(threading.Thread.ru...
How to use RestSharp with async/await
...TaskAsync(request, cancellationTokenSource.Token);
// Will output the HTML contents of the requested page
Console.WriteLine(restResponse.Content);
}
This will use the ExecuteTaskAsync overload that returns a Task<IRestResponse> instance. As it returns a Task, you can use the await ...
Is element block level or inline level?
...elements are outside the scope of the CSS formatting model. Nothing in the HTML or CSS specs specify that images are inline. So regardless of what the browser says it is, images are treated exactly like they were set to display:inline-block.
– DisgruntledGoat
D...
How to use a custom comparison function in Python 3?
...s a function cmp_to_key mentioned at docs.python.org/3.6/library/functools.html#functools.cmp_to_key
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What is the best way to concatenate two vectors?
... boost::join function
http://www.boost.org/doc/libs/1_43_0/libs/range/doc/html/range/reference/utilities/join.html
will give you this.
std::vector<int> v0;
v0.push_back(1);
v0.push_back(2);
v0.push_back(3);
std::vector<int> v1;
v1.push_back(4);
v1.push_back(5);
v1.push_back(6);
...
...
How to use z-index in svg elements?
...d by the order the element appears in the DOM. If manually reordering your html isn't an option or would be difficult, you can use D3 to reorder SVG groups/objects.
Use D3 to Update DOM Order and Mimic Z-Index Functionality
Updating SVG Element Z-Index With D3
At the most basic level (and if you...
How could I use requests in asyncio?
... for url in urls:
tasks.append(fetch(session, url))
htmls = await asyncio.gather(*tasks)
for html in htmls:
print(html[:100])
if __name__ == '__main__':
loop = asyncio.get_event_loop()
loop.run_until_complete(main())
...
Convert JsonNode into POJO
...//jackson.codehaus.org/1.7.9/javadoc/org/codehaus/jackson/map/ObjectMapper.html#readValue(java.lang.String, java.lang.Class)
You can also define a custom deserializer when you instantiate the ObjectMapper:
http://wiki.fasterxml.com/JacksonHowToCustomDeserializers
Edit:
I just remembered something ...
Telling gcc directly to link a library statically
...ctually, it is option of ld linker sourceware.org/binutils/docs/ld/Options.html "-l namespec .. If namespec is of the form :filename, ld will search the library path for a file called filename, otherwise it will search the library path for a file called libnamespec.a. .. on ELF .. systems, ld will s...