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Why would you use Expression rather than Func?
...ore accurately summarized by saying that an expression is to a func what a stringbuilder is to a string. It's not a string/func, but it contains the needed data to create one when asked to do so.
– Flater
Nov 5 '18 at 14:43
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Serializing a list to JSON
...(or whatever object you want) with the following:
using Newtonsoft.Json;
string json = JsonConvert.SerializeObject(listTop10);
Update: you can also add it to your project via the NuGet Package Manager (Tools --> NuGet Package Manager --> Package Manager Console):
PM> Install-Package Ne...
How to write PNG image to string with the PIL?
I have generated an image using PIL . How can I save it to a string in memory?
The Image.save() method requires a file.
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How to use php serialize() and unserialize()
...st a format to express such a thing, it serializes a data structure into a string representation that's unique to PHP and can be reversed into a PHP object using unserialize. There are many other formats though, like JSON or XML.
Take for example this common problem:
How do I pass a PHP array to...
Is there a best practice for generating html with javascript
...re going to feel the performance and maintenance impact by either building strings or creating DOM objects.
Templating isn't all that immature, and you're seeing it popup in most of the major Javascript frameworks.
Here's an example in JQuery Template Plugin that will save you the performance hit,...
How to access the correct `this` inside a callback?
... that adds meaning, or some preceding and following information that gives extra meaning. The term "context" is used in ECMAScript to refer to execution context, which is all the parameters, scope, and this within the scope of some executing code.
This is shown in ECMA-262 section 10.4.2:
Set the T...
Returning JSON from a PHP Script
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According to the manual on json_encode the method can return a non-string (false):
Returns a JSON encoded string on success or FALSE on failure.
When this happens echo json_encode($data) will output the empty string, which is invalid JSON.
json_encode will for instance fail (and retur...
How do I pass a variable by reference?
...t to a new list, but there was no way to change where outer_list pointed.
String - an immutable type
It's immutable, so there's nothing we can do to change the contents of the string
Now, let's try to change the reference
def try_to_change_string_reference(the_string):
print('got', the_strin...
MySQL - ORDER BY values within IN()
...'A', 'D', 'E', 'C')
The FIELD function returns the position of the first string in the remaining list of strings.
However, it is much better performance-wise to have an indexed column that represents your sort order, and then sort by this column.
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How do I write data into CSV format as string (not file)?
...ast data like [1,2,'a','He said "what do you mean?"'] to a CSV-formatted string.
6 Answers
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