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C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术
...简单化一下代码：
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struct test{
int i;
char *p;
};
上面代码中，test结构中i和p指针，在C的编译器中保存的是相对地址——也就是说，他们的地址是相对于struct test的实例的。如果...
How to add percent sign to NSString
...helps in some cases, it is possible to use the unicode character:
NSLog(@"Test percentage \uFF05");
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When to use enumerateObjectsUsingBlock vs. for
...ion allows the collection class to enumerate contents as quickly as the fastest traversal of the native storage format. Likely irrelevant for arrays, but it can be a huge difference for dictionaries.
"Don't use enumerateObjectsUsingBlock when you need to modify local variables" - not true; you can ...
How to have an automatic timestamp in SQLite?
...CURRENT_TIMESTAMP NOT NULL
);
INSERT INTO my_table(name, sqltime) VALUES('test1', '2010-05-28T15:36:56.200');
INSERT INTO my_table(name, sqltime) VALUES('test2', '2010-08-28T13:40:02.200');
INSERT INTO my_table(name) VALUES('test3');
This is the result:
SELECT * FROM my_table;
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What are the differences between json and simplejson Python modules?
...s also updated more frequently than Python, so if you need (or want) the latest version, it's best to use simplejson itself, if possible.
A good practice, in my opinion, is to use one or the other as a fallback.
try:
import simplejson as json
except ImportError:
import json
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Test if something is not undefined in JavaScript
...for me:
typeof possiblyUndefinedVariable !== "undefined"
I will have to test that in other browsers and see how things go I suppose.
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Checking if object is empty, works with ng-show but not from controller?
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thanks! actually i ended up testing it with undefined and it worked great. thanks.
– Martin
Jul 27 '13 at 13:09
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Verifying a specific parameter with Moq
...write a large lambda method (as your example shows). You could put all the test statements in a separate method, but I don't like to do this because it disrupts the flow of reading the test code.
Another option is to use a callback on the Setup call to store the value that was passed into the mock...
Access denied for user 'test'@'localhost' (using password: YES) except root user
...Then when you go to try to sign in to MySQL, type it in like this:
Hit 'Test Connection' and enter your password 'password'.
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What does `someObject.new` do in Java?
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Have a look at this example:
public class Test {
class TestInner{
}
public TestInner method(){
return new TestInner();
}
public static void main(String[] args) throws Exception{
Test t = new Test();
Test.TestInner ti = ...