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How to access object attribute given string corresponding to name of that attribute
...this and say i have a dataframe df1,and a variable x = 'df1' i.e. df1 as a string in var x. i want to print the shape of df like this, getattr(x, 'shape') or getattr('df1', 'shape'). I know this cannot be done with getattr, any other methods.
– ihightower
Feb 1...
What is Data Transfer Object?
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In general Value Objects should be Immutable. Like Integer or String objects in Java. We can use them for transferring data between software layers. If the software layers or services running in different remote nodes like in a microservices environment or in a legacy Java Enterprise Ap...
Detect if device is iOS
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Detecting iOS
With iOS 13 iPad both User agent and platform strings are changed and differentiating between iPad and MacOS seems possible, so all answers below needs to take that into account now.
This might be the shortest alternative that also covers iOS 13:
function iOS() {
retur...
Best way to give a variable a default value (simulate Perl ||, ||= )
...specific to a null value. For example, if $_GET['name'] is set to an empty string, the first line would return an empty string, but we could return "john doe" by using $_GET['name'] ? $_GET['name'] : 'john doe'.
– VPhantom
May 20 at 18:33
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SQL Case Sensitive String Compare
How do you compare strings so that the comparison is true only if the cases of each of the strings are equal as well. For example:
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Catch multiple exceptions at once?
...ompleteness, since .NET 4.0 the code can rewritten as:
Guid.TryParse(queryString["web"], out WebId);
TryParse never throws exceptions and returns false if format is wrong, setting WebId to Guid.Empty.
Since C# 7 you can avoid introducing a variable on a separate line:
Guid.TryParse(queryStrin...
Creating a ZIP Archive in Memory Using System.IO.Compression
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Just another version of zipping without writing any file.
string fileName = "export_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".xlsx";
byte[] fileBytes = here is your file in bytes
byte[] compressedBytes;
string fileNameZip = "Export_" + DateTime.Now.ToString("yyyyMMddhhmmss") +...
How to code a BAT file to always run as admin mode?
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What I Exactly searching for ! no extra changes or extra file required!
– MSS
Jun 15 '19 at 5:12
1
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Use cases for the 'setdefault' dict method
... but not so much if it's dynamic.
For example, I need a dictionary to map strings to unique ints. defaultdict(int) will always use 0 for the default value. Likewise, defaultdict(intGen()) always produces 1.
Instead, I used a regular dict:
nextID = intGen()
myDict = {}
for lots of complicated stuf...
What are naming conventions for MongoDB?
...o name a collection few precautions to be taken :
A collection with empty string (“”) is not a valid collection name.
A collection name should not contain the null character because this defines the end of collection name.
Collection name should not start with the prefix “system.” as this i...