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What does “@@ -1 +1 @@” mean in Git's diff output?
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It's a unified diff hunk identifier. This is documented by GNU Diffutils.
The unified output format starts with a two-line header, which looks like this:
--- from-file from-file-modification-time
+++ to-file to-file-modification...
Selectively revert or checkout changes to a file in Git?
...wouldn't have to add ./ before any filename that starts with a minus sign, if the filename comes after --.
– zrajm
Jan 29 '14 at 13:12
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How to create a simple proxy in C#?
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If you're using HttpListener, you just write the response to HttpListener.GetContext().Response.OutputStream. No need to care for the address.
– OregonGhost
Oct 22 '08 at 18:11
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Printing hexadecimal characters in C
... Maybe I can help. This is (technically) undefined behavior because specifier x requires an unsigned type, but ch is promoted to int. The correct code would simply cast ch to unsigned, or use a cast to unsigned char and the specifier: hhx.
– 2501
Apr 28 '16 ...
Why does Typescript use the keyword “export” to make classes and interfaces public?
...es from "export/private/protected" being a poorly matched set of access modifiers, I believe there is a subtle difference between the two that explains this.
In TypeScript, marking a class member as public or private has no effect on the generated JavaScript. It is simply a design / compile time to...
How to exclude certain messages by TAG name using Android adb logcat?
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If you are using adb logcat you could pipe it through grep and use it's inverted matching:
From the grep manpage:
v, --invert-match
Invert the sense of matching, to select non-matching lines.
For example:
$a...
Object of custom type as dictionary key
... hash(self.name) looks nicer than self.name.__hash__(), and if you do and you can do hash((x, y)) to avoid XORing yourself.
– Rosh Oxymoron
Feb 4 '11 at 19:02
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How do I convert a Vector of bytes (u8) to a string
...s not require an allocation. You can create a String from the string slice if necessary by calling .to_owned() on the string slice (other options are available).
The library reference for the conversion function:
std::str::from_utf8
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ADO.NET DataRow - check for column existence
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DataTables have that schema info, so check if the Row's Table's Columns collection contains the field.
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Why does String.valueOf(null) throw a NullPointerException?
... is overloaded:
String.valueOf(Object)
String.valueOf(char[])
Java Specification Language mandates that in these kind of cases, the most specific overload is chosen:
JLS 15.12.2.5 Choosing the Most Specific Method
If more than one member method is both accessible and applicable to a method...