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Git ignore file for Xcode projects
... (or none at all)
# This file is for SOURCE projects, where there are many extra
# files that we want to exclude
#
#########################
#####
# OS X temporary files that should never be committed
#
# c.f. http://www.westwind.com/reference/os-x/invisibles.html
.DS_Store
# c.f. http://www.west...
Is it good practice to NULL a pointer after deleting it?
...e aren't many deletes in your code to begin with, so the argument that the extra assignment causes clutter doesn't persuade me.
It's often convenient, when debugging, to see the null value rather than a stale pointer.
If this still bothers you, use a smart pointer or a reference instead.
I also se...
Forced naming of parameters in Python
...ed.
Cons:
Checking occurs during run-time, not compile-time.
Use of an extra parameter (though not argument) and an additional check. Small performance degradation respect to regular functions.
Functionality is a hack without direct support by the language (see note below).
When calling the fun...
SQL, Postgres OIDs, What are they and why are they useful?
...efault. Performing a SELECT * will now include this column. Note that this extra “surprise” column may break naïvely written SQL code.
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Choosing Java vs Python on Google App Engine
...anced and better developed than the Java runtime -- the former has had one extra year to develop and mature, after all.
How things will proceed going forward is of course hard to predict -- demand is probably stronger on the Java side (especially since it's not just about Java, but other languages ...
Git submodule push
...bmodule is nothing but a clone of a git repo within another repo with some extra meta data (gitlink tree entry, .gitmodules file )
$ cd your_submodule
$ git checkout master
<hack,edit>
$ git commit -a -m "commit in submodule"
$ git push
$ cd ..
$ git add your_submodule
$ git commit -m "Update...
How to use WinForms progress bar?
...c(progress);? This is very much on purpose, as that would not result in an extra thread running. Only if DoWorkAsync would call it's own await for e.g. waiting on an I/O operation, would the button1_Click function continue. The main UI thread is blocked for this duration. If DoWorkAsync is not reall...
Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
...e above example should clearly show how slow apply can be, but just so its extra clear let's look at the most basic example. Let's square a Series of 10 million numbers with and without apply
s = pd.Series(np.random.rand(10000000))
%timeit s.apply(calc)
3.3 s ± 57.4 ms per loop (mean ± std. dev....
What are the differences between the different saving methods in Hibernate?
... often has performance limitations compared to an update as it seems to do extra fetching for integrity checks of some sort.
– Martin Dale Lyness
Jun 18 '09 at 13:00
1
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How to expire session due to inactivity in Django?
...with this issue, expiration time can be automatically renewed (for another extra 10 minutes) every time the user performs any kind of request with the following sentence:
request.session.set_expiry(request.session.get_expiry_age())
...