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How to avoid null checking in Java?
... junior to intermediate developers tend to face at some point: they either don't know or don't trust the contracts they are participating in and defensively overcheck for nulls. Additionally, when writing their own code, they tend to rely on returning nulls to indicate something thus requiring the ...
Spring MVC: How to perform validation?
....validation.Validator . A question about that: I saw it validates a class. Does the class have to be filled manually with the values from the user input, and then passed to the validator?
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Why is “copy and paste” of code dangerous? [closed]
...hen needed (so if you decide that the application needs updating, you only do it in one place).
Have your boss read about the DRY principle (Don't Repeat Yourself).
What you are describing sounds like the perfect use for libraries, where you share code and only keep it in one place.
I would only ...
Combining multiple commits before pushing in Git [duplicate]
...ke to combine them into a single commit before pushing up to a remote. How do I do it? I think rebase does this, but I can't make sense of the docs.
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Resolve Git merge conflicts in favor of their changes during a pull
How do I resolve a git merge conflict in favor of pulled changes?
12 Answers
12
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Java, How do I get current index/key in “for each” loop [duplicate]
In Java, How do I get the current index for the element in Java?
7 Answers
7
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How to make my custom type to work with “range-based for loops”?
... on compilers that implement the defect report changes, and compilers that do not.
The objects returned do not have to actually be iterators. The for(:) loop, unlike most parts of the C++ standard, is specified to expand to something equivalent to:
for( range_declaration : range_expression )
becom...
Get object by id()? [duplicate]
Let's say I have an id of a Python object, which I retrieved by doing id(thing) . How do I find thing again by the id number I was given?
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How Do I Get the Query Builder to Output Its Raw SQL Query as a String?
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If you have multiple databases, you may need to do DB::connection('database')->getQueryLog()
– Damien Ó Ceallaigh
Sep 27 '18 at 3:27
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strdup() - what does it do in C?
...art of the ISO C standard itself(a) (it's a POSIX thing), it's effectively doing the same as the following code:
char *strdup(const char *src) {
char *dst = malloc(strlen (src) + 1); // Space for length plus nul
if (dst == NULL) return NULL; // No memory
strcpy(dst, src); ...