大约有 40,000 项符合查询结果（耗时：0.0409秒） [XML]
Redefining NULL
...L pointer will remain undetected and at the same time cause dangerous behaviour.
7 Answers
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Encrypting & Decrypting a String in C# [duplicate]
...Cryptography is not simple so it's best to avoid "rolling your own" encryption algorithm.
You can, however, "roll your own" wrapper class around something like the built-in RijndaelManaged cryptography class.
Rijndael is the algorithmic name of the current Advanced Encryption Standard, so you're c...
Why does PostgreSQL perform sequential scan on indexed column?
...ster than an index scan.
This is because an index scan requires several IO operations for each row (look up the row in the index, then retrieve the row from the heap). Whereas a sequential scan only requires a single IO for each row - or even less because a block (page) on the disk contains more...
Create a shortcut on Desktop
...
With additional options such as hotkey, description etc.
At first, Project > Add Reference > COM > Windows Script Host Object Model.
using IWshRuntimeLibrary;
private void CreateShortcut()
{
object shDesktop = (object)"De...
How do I read / convert an InputStream into a String in Java?
If you have a java.io.InputStream object, how should you process that object and produce a String ?
59 Answers
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Sync data between Android App and webserver [closed]
... an Android App and a Server. If you've seen Evernote or similar Applications, you certainly understand what I mean.
9 An...
What is the difference between canonical name, simple name and class name in Java Class?
...y.class (nested class)");
printNamesForClass(
new java.io.Serializable(){}.getClass(),
"new java.io.Serializable(){}.getClass() (anonymous inner class)");
}
private static void printNamesForClass(final Class<?> clazz, final String label) {
Syste...
Xcode 4 and Core Data: How to enable SQL Debugging
I'm working on a universal iOS app and I'd like to see the raw SQL in the logs when I'm debugging. There is some info in this blog post about how to enable raw SQL logging for iOS Core Data development. The given example is for Xcode 3 and it's just not clear to me how to enable this in Xcode 4.
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Idiomatic way to convert an InputStream to a String in Scala
I have a handy function that I've used in Java for converting an InputStream to a String. Here is a direct translation to Scala:
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How to return multiple lines JSX in another return statement in React?
...
Try to think of the tags as function calls (see docs). Then the first one becomes:
{[1,2,3].map(function (n) {
return React.DOM.p(...);
})}
And the second one:
{[1,2,3].map(function (n) {
return (
React.DOM.h3(...)
React.DOM.p(...)
)
})}
...