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LINQ Contains Case Insensitive
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StartWith converts to LIKE 'hello%' ?
– Bart Calixto
Jun 30 '14 at 19:13
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Combine Date and Time columns using python pandas
...etime64[ns]
Note: surprisingly (for me), this works fine with NaNs being converted to NaT, but it is worth worrying that the conversion (perhaps using the raise argument).
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How do I access call log for android?
...on = c.getString(c.getColumnIndex(CallLog.Calls.DURATION));// for duration
int type = Integer.parseInt(c.getString(c.getColumnIndex(CallLog.Calls.TYPE)));// for call type, Incoming or out going.
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Measuring execution time of a function in C++
...r( long long i = 0; i != 2000000; ++i )
{
number += 5;
}
}
int main()
{
auto t1 = std::chrono::high_resolution_clock::now();
function();
auto t2 = std::chrono::high_resolution_clock::now();
auto duration = std::chrono::duration_cast<std::chrono::microseconds>( ...
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(); ...
Reverse of JSON.stringify?
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I read the OP as saying "I converted a javascript object to a JSON string, and now I want to convert it back - how do I do it?" All the other answers say just use JSON.parse. I'm just warning that theres a lot of cases that will not handle correctly. I...
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...
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...
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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