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Concatenating two lists - difference between '+=' and extend()
I've seen there are actually two (maybe more) ways to concatenate lists in Python:
One way is to use the extend() method:
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How to return a string value from a Bash function
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+1 @tomas-f : you have to be really careful on what you have in this function "getSomeString()" as having any code which will eventually echo will mean that you get incorrect return string.
– Mani
Sep 14 '12 at 16:38
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error C2512: “Foo”: 没有合适的默认构造函数可用 - C/C++ - 清泛网 - 专...
error C2512: “Foo”: 没有合适的默认构造函数可用错误信息如下：C: Program Files Microsoft Visual Studio 11.0 VC INCLUDE xmemory0(601) : error C2512: Foo: 没有合适的默认构...错误信息如下：
C:\Program Files\Microsoft Visual Studio 11.0\VC\INCLUDE\xmemory0(60...
Can you do a partial checkout with Subversion?
...ight find useful. From the documentation:
... sparse directories (or shallow checkouts) ... allows you to easily check out a working copy—or a portion of a working copy—more shallowly than full recursion, with the freedom to bring in previously ignored files and subdirectories at a later tim...
How can I add new keys to a dictionary?
...ted to strings). dict.update can also take another dictionary, but I personally prefer not to explicitly create a new dictionary in order to update another one.
– bgusach
Feb 13 '19 at 8:38
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GoogleTest: How to skip a test?
...o). I then removed my comment, figuring it's obsolete... but that's some really good info! +1
– Kiril
Aug 26 '11 at 17:05
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Are HLists nothing more than a convoluted way of writing tuples?
I am really interested in finding out where the differences are, and more generally, to identify canonical use cases where HLists cannot be used (or rather, don't yield any benefits over regular lists).
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Can I get JSON to load into an OrderedDict?
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I am perplexed. The docs say the object_pairs_hook gets called for each literal that gets decoded into pairs. Why doesn't this create a new OrderedDict for each record in the JSON?
– Tim Keating
Apr 25 '14 at 19:33
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What is the curiously recurring template pattern (CRTP)?
... curiously recurring, isn't it? :)
Now, what does this give you? This actually gives the X template the ability to be a base class for its specializations.
For example, you could make a generic singleton class (simplified version) like this
template <class ActualClass>
class Singleton
{
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How do I execute a Git command without being in the repository?
...Try:
git --git-dir=/home/repo/.git log
It is important to give the path all the way up to the .git directory of your repository. Otherwise you will get only an error message that says something like:
fatal: Not a git repository
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