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Laravel Schema onDelete set null
...e out how to set proper onDelete constraint on a table in Laravel. (I'm working with SqLite)
4 Answers
...
Read and write a String from text file
... dir = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first {
let fileURL = dir.appendingPathComponent(file)
//writing
do {
try text.write(to: fileURL, atomically: false, encoding: .utf8)
}
catch {/* error handling here */}
//reading
do ...
Remove columns from DataTable in C#
I have a DataSet which I get a DataTable from that I am being passed back from a function call. It has 15-20 columns, however I only want 10 columns of the data.
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How to redirect 'print' output to a file using python?
...:', filename, file=f) # Python 3.x
However, redirecting stdout also works for me. It is probably fine for a one-off script such as this:
import sys
orig_stdout = sys.stdout
f = open('out.txt', 'w')
sys.stdout = f
for i in range(2):
print 'i = ', i
sys.stdout = orig_stdout
f.close()
Re...
When to catch java.lang.Error?
...r, sometimes you need to catch specific errors.
If you're writing framework-ish code (loading 3rd party classes), it might be wise to catch LinkageError (no class def found, unsatisfied link, incompatible class change).
I've also seen some stupid 3rd-party code throwing subclasses of Error, so yo...
How to make an AJAX call without jQuery?
How to make an AJAX call using JavaScript, without using jQuery?
23 Answers
23
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Fastest way to check a string contain another substring in JavaScript?
I'm working with a performance issue on JavaScript. So I just want to ask: what is the fastest way to check whether a string contains another substring (I just need the boolean value)? Could you please suggest your idea and sample snippet code?
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Git Push Error: insufficient permission for adding an object to repository database
...o chmod -R a+rwX .
If you do not fix the underlying cause, the error will keep coming back and you'll have to keep re-running the above commands over and over again.
Underlying Causes
The error could be caused by one of the following:
The repository isn't configured to be a shared repository (s...
What is the difference between a string and a byte string?
I am working with a library which returns a byte string and I need to convert this to a string.
7 Answers
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Microsoft Roslyn vs. CodeDom
...
Disclaimer: I work for Microsoft on the Roslyn team.
CodeDom is a precursor to Roslyn, but is only marginally related. Essentially, CodeDom is a simple and (somewhat) langage agnostic way to generate code that was added in .NET 1.0 to suppor...