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Hard reset of a single file
... both the working copy of my-file.txt and its state in the index with that from HEAD.
-- basically means: treat every argument after this point as a file name. More details in this answer. Thanks to VonC for pointing this out.
...
Should you ever use protected member variables?
...s later. (Of course, the pimpl idiom would enable hiding them visually and from the translation units including the header, too.)
– underscore_d
May 12 '17 at 20:57
add a comm...
Finding last occurrence of substring in string, replacing that
...
@AdamMagyar yes, container[a:b] slices from a up to b-1 index of the container. If 'a' is omitted, then it defaults to 0; if 'b' is omitted it defaults to len(container). The plus operator just concatenates. The rfind function as you pointed out returns the index ...
FFmpeg on Android
...external and make away. You'll need to extract bionic(libc) and zlib(libz) from the Android build as well, as ffmpeg libraries depend on them.
Create a dynamic library wrapping ffmpeg functionality using the Android NDK. There's a lot of documentation out there on how to work with the NDK. Basically...
How to crop an image using PIL?
I want to crop image in the way by removing first 30 rows and last 30 rows from the given image. I have searched but did not get the exact solution. Does somebody have some suggestions?
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Best way to parse command line arguments in C#? [closed]
...entation) and/or Mono.Options (same API, different namespace). An example from the documentation:
bool show_help = false;
List<string> names = new List<string> ();
int repeat = 1;
var p = new OptionSet () {
{ "n|name=", "the {NAME} of someone to greet.",
v => names.Add (...
Get list from pandas DataFrame column headers
I want to get a list of the column headers from a pandas DataFrame. The DataFrame will come from user input so I won't know how many columns there will be or what they will be called.
...
how to convert array values from string to int?
... $long_string = implode(',', $integers);
Method 1
This is the one liner from Mark's answer:
$integerIDs = array_map('intval', explode(',', $long_string));
Method 2
This is the JSON approach:
$integerIDs = json_decode('[' . $long_string . ']', true);
Method 3
I came up with this one as ...
Inheritance vs. Aggregation [closed]
...ginal class in a root class and a sub class. And let the new class inherit from the root class. But you should take care with this, not to create an illogical separation.
Lets add an example. We have a class 'Dog' with methods: 'Eat', 'Walk', 'Bark', 'Play'.
class Dog
Eat;
Walk;
Bark;
Pla...
Does assignment with a comma work?
...the comma operator.
The comma operator evaluates both of its operands (from left to right) and returns the value of the second operand.
This code:
aaa = 1,2,3
Is equivalent to:
aaa = 1;
2;
3;
So aaa is implicitly declared and assigned a value of 1. Notice that the output on the console...