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- Dictionaryonly/ˈəʊnli/
adverb
- 1. and no one or nothing more besides; solely: "there are only a limited number of tickets available" Similar
- 2. no longer ago than: "genes that were discovered only last year" Similar
adjective
- 1. alone of its or their kind; single or solitary: "the only medal we had ever won"
conjunction
- 1. except that; but: informal "he is still a young man, only he seems older because of his careworn expression"
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Jun 13, 2017 · 1. If you have a completely empty dataframe without columns or index, you can let it have columns by assigning None to these columns. df = pd.DataFrame() # <---- shape: (0, 0) df[['col1', 'col2', 'col3']] = None # <---- shape: (0, 3) Then to assign a row to it, you can use loc indexer.
Jan 12, 2016 · Automatically implemented properties. An automatically implemented property (or auto-property for short), is a non-abstract non-extern property with semicolon-only accessor bodies. Auto-properties must have a get accessor and can optionally have a set accessor. When a property is specified as an automatically implemented property, a hidden ...
Feb 25, 2019 · The variant shown abover, @St.Antario, uses a single active debugging level across the entire application, and I usually use command line options to allow the debugging level to be set when the program is run.
Dec 7, 2016 · 31. In CMake >= 2.8, use target_compile_definitions: target_compile_definitions(MyTarget PUBLIC "$<$<CONFIG:DEBUG>:DEBUG>") When compiling in Debug mode, this will define the DEBUG symbol for use in your code. It will work even in IDEs like Visual Studio and Xcode for which cmake generates a single file for all compilation modes.
Mar 20, 2009 · It is only used by third-party type-checking tools. It is not a "declaration", because Python doesn't have declarations. It does not make the name uninitialized_value exist (which is why the += doesn't work), and it does not prevent assigning a value of a different type (only the third-party type checker will complain).
Feb 20, 2017 · I need to make a dictionary containing only keys. I cannot use d.append() as it is not a list, neither setdefault as it needs 2 arguments: a key and a value. It should work as the following: d = {}...
Remove the #define DEBUG in your code. Set preprocessors in the build configuration for that specific build. The reason it prints "Mode=Debug" is because of your #define and then skips the elif. The right way to check is: Console.WriteLine("Mode=Debug"); Console.WriteLine("Mode=Release"); Don't check for RELEASE.
Jan 11, 2013 · 9. If you want to share a define between two source files, move it to a header file and include that header from both source files. mydefines.h: source1.cpp: source2.cpp: You could also specify the define in the compiler command line.
0. In this case, it's no use but I had a similar problem where I just wanted set to be private and get to be public, instead of specifying the setter I marked it private. I didn't now we could do that. public String Age{get; private set; } Sometimes the more obvious it is, the more difficult it is to find.
Apr 25, 2011 · 56. In the C and C++ programming languages, #pragma once is a non-standard but widely supported preprocessor directive designed to cause the current source file to be included only once in a single compilation. Thus, #pragma once serves the same purpose as #include guards, but with several advantages, including: less code, avoiding name clashes ...
