大约有 40,000 项符合查询结果（耗时：0.0607秒） [XML]
sed command with -i option (in-place editing) works fine on Ubuntu but not Mac [duplicate]
... That's simpler than trying to work out which variant of sed you have installed or other gizmos I've seen suggested. I hope you keep the file under version control (or otherwise backed up) so that you can recover if there's a bug in your sed script. Of course, the .bak file gives you that protect...
Is it secure to store passwords as environment variables (rather than as plain text) in config files
...e that is meant to look like a configuration file. An attacker will eventually figure out what's going on, or stumble across it.
Security provided by encryption that is trivial to break, (think caesar cipher!).
Security provided by encryption that can be broken with some effort.
Security provided b...
Why are local variables not initialized in Java?
... edited Feb 3 '14 at 13:33
allprog
15.7k88 gold badges5353 silver badges9393 bronze badges
answered Jan 6 '09 at 7:18
...
When should you use a class vs a struct in C++?
...
A struct with no modifiers or methods is called a POD struct, which exists as a backwards compatible interface with C libraries as it is (supposedly) guaranteed to be laid out as though it were a C struct. Apart from this one exception though, the only difference is ...
What is the meaning of prepended double colon “::”?
...space you're currently in. For instance, if you had two different classes called Configuration as such:
class Configuration; // class 1, in global namespace
namespace MyApp
{
class Configuration; // class 2, different from class 1
function blah()
{
// resolves to MyApp::Configur...
How to change ProgressBar's progress indicator color in Android
...
Is it possible to change the colour dynamically?
– async
May 29 '14 at 21:08
can the c...
Are there any cases when it's preferable to use a plain old Thread object instead of one of the newe
...annot be made obsolete because obviously it is an implementation detail of all those other patterns you mention.
But that's not really your question; your question is
are there any cases when it's necessary or useful to use a plain old Thread object instead of one of the above constructs?
Su...
Can anyone explain what JSONP is, in layman terms? [duplicate]
...nly used to
bypass the cross-domain policies in web browsers. (You are not allowed to make AJAX requests to a web page perceived to be on a different server by the browser.)
JSON and JSONP behave differently on the client and the server. JSONP requests are not dispatched using the XMLHTTPRequest an...
How to find the 'sizeof' (a pointer pointing to an array)?
... Zan, which is to stash the size somewhere. For example, if you're dynamically allocating the array, allocate a block one int bigger than the one you need, stash the size in the first int, and return ptr+1 as the pointer to the array. When you need the size, decrement the pointer and peek at the s...
How to test an Android Library Project
I am writing an Android Library Project basing on Android Bitmap class (call it AndroindLib) which contains only utility class (no activity). I tried to test it using Android JUnit, but it keeps complaining that can't find the AnroidLib.apk
...