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Remap values in pandas column with a dict
...s doesn't work anymore at all, which isn't surprising given the answer was from 4 years ago. This question needs a new answer given how general the operation is...
– PrestonH
Nov 21 '17 at 17:01
...
What does an exclamation mark mean in the Swift language?
... value, this can be obtained by "unwrapping" the variable (obtaining the T from Some(T)).
How is john!.apartment = number73 different from john.apartment = number73? (Paraphrased)
If you write the name of an Optional variable (eg text john, without the !), this refers to the "wrapped" enum (S...
Runtime vs. Compile time
...n-time invariants are rarely enforced by the compiler alone; it needs help from the programmer.
What can go wrong are run-time errors:
Division by zero
Dereferencing a null pointer
Running out of memory
Also there can be errors that are detected by the program itself:
Trying to open a file tha...
What's the difference between `=` and `
...
From here:
The operators <- and = assign into the environment in which they are evaluated. The operator <- can be used anywhere, whereas the operator = is only allowed at the top level (e.g., in the complete express...
Maven dependency spring-web vs spring-webmvc
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From the official doc:
The spring-web module provides basic web-oriented integration features such as multipart file upload functionality and the initialization of the IoC container using Servlet listeners and a web-oriented ...
Add … if string is too long PHP [duplicate]
......");
Where:
Hello World: the string to trim.
0: number of characters from the beginning of the string.
10: the length of the trimmed string.
...: an added string at the end of the trimmed string.
This will return Hello W....
Notice that 10 is the length of the truncated string + the added s...
Encoding as Base64 in Java
...le. I am currently working on a class to remove the apache commons library from our spring project. Most of the stuff can be replaced easily with method from Spring libraries or jdk.
– Adrian Cosma
Nov 1 '16 at 13:35
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String concatenation in Ruby
...g"
The second method seems to be more efficient in term of memory/speed from what I've seen (not measured though). All three methods will throw an uninitialized constant error when ROOT_DIR is nil.
When dealing with pathnames, you may want to use File.join to avoid messing up with pathname separ...
Using Server.MapPath in external C# Classes in ASP.NET
...Ewing, what you suggest won't work because IIS doesn't load the assemblies from the location that you install them in, in the web site. They are copied and loaded from a temporary asp.net cache location, so doing a GetAssembly or GetExecutingAssembly will point you to the location of the assembly,...
Is it ok to use dashes in Python files when trying to import them?
...pt including what I considered to be the most relevant bits of information from all other answers in one place
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