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What is the purpose and use of **kwargs?
...t_name = John
last_name = Doe
You can also use the **kwargs syntax when calling functions by constructing a dictionary of keyword arguments and passing it to your function:
>>> kwargs = {'first_name': 'Bobby', 'last_name': 'Smith'}
>>> print_keyword_args(**kwargs)
first_name = B...
How do I typedef a function pointer with the C++11 using syntax?
...hank you. And I prefer seeing a pointer, as it is a function pointer after all.
– Pierre
Mar 31 at 7:34
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Share data between AngularJS controllers
... the $scope.$watch method works beautifully for making a rest call from one scope and applying the results to another scope
– aclave1
Aug 2 '14 at 4:09
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Xcode 4 - detach the console/log window
...o Xcode preferences, and open the Behavior tab.
Tell Xcode to open a tab called "Debugger" when "Run Pauses" or "Run Starts". Then run it, and break that Debugging tab out into another window (drag it off the tab bar into its own window by just letting it drop outside the current window). Now refo...
Getting vertical gridlines to appear in line plot in matplotlib
...
You may need to give boolean arg in your calls, e.g. use ax.yaxis.grid(True) instead of ax.yaxis.grid(). Additionally, since you are using both of them you can combine into ax.grid, which works on both, rather than doing it once for each dimension.
ax = plt.gca()
a...
Random float number generation
... will often not be sufficient if you need truly random numbers.
Before calling rand(), you must first "seed" the random number generator by calling srand(). This should be done once during your program's run -- not once every time you call rand(). This is often done like this:
srand (static_ca...
How can I count the number of matches for a regex?
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matcher.find() does not find all matches, only the next match.
Solution for Java 9+
long matches = matcher.results().count();
Solution for Java 8 and older
You'll have to do the following. (Starting from Java 9, there is a nicer solution)
int count...
What is non-blocking or asynchronous I/O in Node.js?
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Synchronous vs Asynchronous
Synchronous execution usually refers to code executing in sequence. Asynchronous execution refers to execution that doesn't run in the sequence it appears in the code. In the following example, the synchronous operation causes the alerts to fire in s...
HTTP vs HTTPS performance
...any major differences in performance between http and https? I seem to recall reading that HTTPS can be a fifth as fast as HTTP. Is this valid with the current generation webservers/browsers? If so, are there any whitepapers to support it?
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VS2012 return to a normal TFS checkin window?
...icrosoft Visual Studio 11.0\Common7\IDE\TF.exe (this is the default VS install location on Windows x64)
Arguments: checkin
Initial directory: $(SolutionDir)
Here is a screenshot:
You can invoke from TOOLS -> Checkin (or even assign a keyboard shortcut to Tools.ExternalCommand* as described here...