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How to trigger a phone call when clicking a link in a web page on mobile phone
...el: scheme. So use <a href="tel:555-555-5555">555-555-5555</a> and you should be good to go.
If you want to use it for an image, the <a> tag can handle the <img/> placed in it just like other normal situations with : <a href="tel:555-555-5555"><img src="path/to/phon...
How to programmatically cause a core dump in C/C++
...>
: : :
raise (SIGABRT);
Calling abort() will also cause a core dump, and you can even do this without terminating your process by calling fork() followed by abort() in the child only - see this answer for details.
shar...
How to rsync only a specific list of files?
...'re looking for a specific list of files, putting them directly on the command line instead:
# rsync -avP -e ssh `cat deploy/rsync_include.txt` root@0.0.0.0:/var/www/
This is assuming, however, that your list isn't so long that the command line length will be a problem and that the rsync_include....
nonlocal keyword in Python 2.x
I'm trying to implement a closure in Python 2.6 and I need to access a nonlocal variable but it seems like this keyword is not available in python 2.x. How should one access nonlocal variables in closures in these versions of python?
...
Concurrent HashSet in .NET Framework?
...t; _data;
This is the recommended option because the type is thread-safe and provide you the same advantages than a HashSet<T> except key and value are different objects.
Source: Social MSDN
ConcurrentBag
If you don't mind about the duplicate entries, you can use the class ConcurrentBag&l...
node.js, socket.io with SSL
...
we do this. we goto https : // www.thebitcoinwheel.com and it still makes a request to http automatically, this is something with the socket.io code and is the point of the question.
– Beyond
Jul 6 '11 at 18:38
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Dump Mongo Collection into JSON format
...) which can dump a collection. This utility uses the native libmongoclient and is likely the fastest method.
mongoexport -d <database> -c <collection_name>
Also helpful:
-o: write the output to file, otherwise standard output is used (docs)
--jsonArray: generates a valid json docume...
Why aren't variables declared in “try” in scope in “catch” or “finally”?
In C# and in Java (and possibly other languages as well), variables declared in a "try" block are not in scope in the corresponding "catch" or "finally" blocks. For example, the following code does not compile:
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Is there a concurrent List in Java's JDK?
... as shown here. I have exceptions even though I just use its addAll method and read it using stream. stackoverflow.com/questions/1527519/…
– devssh
Mar 26 '18 at 10:01
add a...
Different between parseInt() and valueOf() in java?
...ger.valueOf(Integer.parseInt("123"))
Now, if what you want is the object and not the primitive, then using valueOf(String) may be more attractive than making a new object out of parseInt(String) because the former is consistently present across Integer, Long, Double, etc.
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