大约有 46,000 项符合查询结果（耗时：0.0493秒） [XML]
“Instantiating” a List in Java? [duplicate]
...
In Java, List is an interface. That is, it cannot be instantiated directly.
Instead you can use ArrayList which is an implementation of that interface that uses an array as its backing store (hence the name).
Since ArrayList is a kind of List, you can easily upca...
Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?)
...ly' blocks. The reason is that C++ instead supports RAII: "Resource Acquisition Is Initialization" -- a poor name† for a really useful concept.
The idea is that an object's destructor is responsible for freeing resources. When the object has automatic storage duration, the object's destructor...
clear javascript console in Google Chrome
I was wondering if I could clear up the console with some command..
19 Answers
19
...
Is there a “theirs” version of “git merge -s ours”?
When merging topic branch "B" into "A" using git merge , I get some conflicts. I know all the conflicts can be solved using the version in "B".
...
Compiling C++ on remote Linux machine - “clock skew detected” warning
I'm connected to my university's small Linux cluster via PuTTY and WinSCP, transferring files using the latter and compiling and running them with the former. My work so far has been performed in the university's labs, but today I have been doing some work at home that generated an interesting warn...
Exposing database IDs - security risk?
I've heard that exposing database IDs (in URLs, for example) is a security risk, but I'm having trouble understanding why.
...
Creating an object: with or without `new` [duplicate]
... might have already been asked (say, here ); yet I still don't understand it. So, let me ask it.
2 Answers
...
What is the difference between the kernel space and the user space?
...ograms run in user space. User space is basically a form of sand-boxing -- it restricts user programs so they can't mess with memory (and other resources) owned by other programs or by the OS kernel. This limits (but usually doesn't entirely eliminate) their ability to do bad things like crashing th...
What is the LD_PRELOAD trick?
I came across a reference to it recently on proggit and (as of now) it is not explained.
9 Answers
...
Can regular expressions be used to match nested patterns? [duplicate]
Is it possible to write a regular expression that matches a nested pattern that occurs an unknown number of times? For example, can a regular expression match an opening and closing brace when there are an unknown number of open/close braces nested within the outer braces?
...