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how to prevent “directory already exists error” in a makefile when using mkdir
...e $(OBJDIR) target should be existent". Make checks for file presence (and timestamps) to decide if it need to build the target. Hence here, if $(OBJDIR) is absent it will build it, so that it is existent in order to build the current target $(OBJS), that will be created inside.
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C# Interfaces. Implicit implementation versus Explicit implementation
... Int32 n = v.CompareTo(v); // No boxing n = v.CompareTo(o); // compile-time error }
– Andy Dent
Aug 26 '15 at 5:18
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How to add a WiX custom action that happens only on uninstall (via MSI)?
...er currently immediately below.
This topic has been a headache for long time. I finally figured it out.
There are some solutions online, but none of them really works. And of course there is no documentation.
So in the chart below there are several properties that are suggested to use and the val...
Automatically update version number
...* or 1.0.0.* will replace the revision and build numbers with a coded date/timestamp, which is usually also a good way.
For more info, see the Assembly Linker Documentation in the /v tag.
As for automatically incrementing numbers, use the AssemblyInfo Task:
AssemblyInfo Task
This can be configu...
How to find the size of localStorage
...perty of the Storage object. The other browsers have no equivilant at this time.
I believe that the default amount of space is 5MB, although I have not tested it personally.
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data.frame rows to a list
... these in a list.
Here are two methods I came up with that were roughly 3 times faster than split(dat, seq_len(nrow(dat))) for that data set. Below, I benchmark the three methods on a 7500 row, 5 column data set (iris repeated 50 times).
library(data.table)
library(microbenchmark)
microbenchmark(...
Python matplotlib multiple bars
...ultiple bars in matplotlib, when I tried to call the bar function multiple times, they overlap and as seen the below figure the highest value red can be seen only.
How can I plot the multiple bars with dates on the x-axes?
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MVC (Laravel) where to add logic
...n): Events are useful for things that can be thrown at any class any given time. Think, for instance, of sending notifications to a user.
When you need, you fire the event to send a notification at any class of your application. Then, you can have a class like UserNotificationEvents that handles al...
get string value from HashMap depending on key name
...("my_code") to string as by default it returns value of string if at entry time one has kept value as a string.
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When to choose checked and unchecked exceptions
...d. The Java core API fails to follow these rules for SQLException (and sometimes for IOException) which is why they are so terrible.
Checked Exceptions should be used for predictable, but unpreventable errors that are reasonable to recover from.
Unchecked Exceptions should be used for everything e...