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Is it considered acceptable to not call Dispose() on a TPL Task object?
...oft pfx team has this to say:
Task.Dispose exists due to Task
potentially wrapping an event handle
used when waiting on the task to
complete, in the event the waiting
thread actually has to block (as
opposed to spinning or potentially
executing the task it's waiting on).
If all yo...
Warning message: In `…` : invalid factor level, NA generated
...
Here is a flexible approach, it can be used in all cases, in particular:
to affect only one column, or
the dataframe has been obtained from applying previous operations (e.g. not immediately opening a file, or creating a new data frame).
First, un-factorize a stri...
What C++ Smart Pointer Implementations are available?
...g limited garbage collection facilities. The first downside being that it calls delete upon destruction making them unacceptable for holding array allocated objects (new[]). It takes ownership of the pointer so two auto pointers shouldn't contain the same object. Assignment will transfer ownership a...
Transfer-Encoding: gzip vs. Content-Encoding: gzip
... Content-Encoding is a business layer property, which a proxy would not be allowed to change, in addition to other ramifications (ETags etc). According to reality however, TE is not normally used for compression, and many servers/clients don't even support it out of the box, whereas CE is used more ...
Control the dashed border stroke length and distance between strokes
...th border-image
Compatibility: It offers great browser support (IE 11 and all modern browsers). A normal border can be set as a fallback for older browsers.
Let's create these
These borders will display exactly the same cross-browser!
Step 1 - Create a suitable image
This example is 15 pixel...
What order are the Junit @Before/@After called?
I have an Integration Test Suite. I have a IntegrationTestBase class for all my tests to extend. This base class has a @Before ( public void setUp() ) and @After ( public void tearDown() ) method to establish API and DB connections. What I've been doing is just overriding those two methods in ...
How can I test that a value is “greater than or equal to” in Jasmine?
.../jasmine-2.0.0/boot.js"></script>
Then in your boot.js add the call to add the matchers after jasmine has been defined but before jasmine.getEnv(). Get env is actually a (slightly misleadingly named) setup call.
The matchers get setup in the call to setupCoreMatchers in the Env construc...
How do I create a readable diff of two spreadsheets using git diff?
...e a lot of spreadsheets (xls) in our source code repository. These are usually edited with gnumeric or openoffice.org, and are mostly used to populate databases for unit testing with dbUnit . There are no easy ways of doing diffs on xls files that I know of, and this makes merging extremely tedio...
Understanding the Gemfile.lock file
After running the bundle install command, 'Gemfile.lock ' is created in the working directory. What do the directives inside that file mean?
...
What components are MVC in JSF MVC framework?
...e as below:
M - Entity
V - Facelets/JSP page
C - Managed bean
In the smaller client picture, the developer V is in turn dividable as below:
M - JSF component tree
V - Rendered HTML output
C - Client (webbrowser)
In the yet smaller JavaScript picture, the client V is in turn dividable as below:...