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How do Python functions handle the types of the parameters that you pass in?
...s in most programming languages, though not all) -- and there is no constraint on the name such that, if it has once referred to an object of type X, it's then forevermore constrained to refer only to other objects of type X. Constraints on names are not part of the concept of "strong typing", thou...
How to navigate through a vector using iterators? (C++)
...lt;string>::iterator it; // declare an iterator to a vector of strings
int n = 3; // nth element to be found.
int i = 0; // counter.
// now start at from the beginning
// and keep iterating over the element till you find
// nth element...or reach the end of vector.
for(it = myvector.begin(); ...
POST request via RestTemplate in JSON
...
Can Spring use the message converters to automatically convert the Java Object to json like it did in Restful API with RestTemplate?
– fall
Aug 10 '17 at 10:21
...
C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
...护，而不能任意访问。
例子1：
Code:
#include <stdio.h>
int main(){
int i=0;
scanf("%d",i);
printf("%d\n",i);
return 0;
}
编译和执行一下
$ gcc -o segerr segerr.c
$ ./segerr
10
段错误
咋一看，好像没有问题...
In C++, is it still bad practice to return a vector from a function?
... "compiler does it anyway": compiler isn't required to do that == uncertainty == bad idea (need 100% certainty). "comprehensive analysis"There is a huge problem with that analysis - it relies on undocumented/non-standard language features in unknown compiler ("Although copy elision is never requir...
How do I reverse a C++ vector?
...der for this purpose.
#include <vector>
#include <algorithm>
int main() {
std::vector<int> a;
std::reverse(a.begin(), a.end());
return 0;
}
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...
Find an item in List by LINQ?
...
If you want the index of the element, this will do it:
int index = list.Select((item, i) => new { Item = item, Index = i })
.First(x => x.Item == search).Index;
// or
var tagged = list.Select((item, i) => new { Item = item, Index = i });
int index = (fro...
How can I read SMS messages from the device programmatically in Android?
...esult to prevent exception
do {
String msgData = "";
for(int idx=0;idx<cursor.getColumnCount();idx++)
{
msgData += " " + cursor.getColumnName(idx) + ":" + cursor.getString(idx);
}
// use msgData
} while (cursor.moveToNext());
} else {
// em...
Calculate size of Object in Java [duplicate]
...getObjectSize(o);
}
}
Use getObjectSize:
public class C {
private int x;
private int y;
public static void main(String [] args) {
System.out.println(ObjectSizeFetcher.getObjectSize(new C()));
}
}
Source
...
How set background drawable programmatically in Android
...dy); is correct.
Another way to achieve it is to use the following:
final int sdk = android.os.Build.VERSION.SDK_INT;
if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
layout.setBackgroundDrawable(ContextCompat.getDrawable(context, R.drawable.ready) );
} else {
layout.setBackground(C...