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Xcode iOS project only shows “My Mac 64-bit” but not simulator or device
...that my iOS project is only showing "My Mac 64-bit" rather than the Simulator or my iPhone to build to. I have no idea why this is happening. I do not think that I have changed anything.
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“where 1=1” statement [duplicate]
...d up SQL statements.
When you add and value = "Toyota" you don't have to worry about whether there is a condition before or just WHERE. The optimiser should ignore it
No magic, just practical
Example Code:
commandText = "select * from car_table where 1=1";
if (modelYear <> 0) comman...
Why would I use Scala/Lift over Java/Spring? [closed]
...ions and Spring really minimizes the amount of coding that you have to do for an application. Does Scala/Lift improve upon that?
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How to convert std::string to lower case?
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Adapted from Not So Frequently Asked Questions:
#include <algorithm>
#include <cctype>
#include <string>
std::string data = "Abc";
std::transform(data.begin(), data.end(), data.begin(),
[](unsigned char c){ return std::tolower(c); });
You're really not going to ge...
How to overload functions in javascript?
...rguments passed to it.
Default arguments - You can define a default value for an argument if it is not passed.
Named arguments - Argument order becomes irrelevant and you just name which arguments you want to pass to the function.
Below is a section on each of these categories of argument handling...
When you exit a C application, is the malloc-ed memory automatically freed?
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It depends on the operating system. The majority of modern (and all major) operating systems will free memory not freed by the program when it ends.
Relying on this is bad practice and it is better to free it explicitly. The issue isn't just that your code looks bad....
Remove empty elements from an array in Javascript
...ments that pass the criteria of the callback function you provide to it.
For example, if you want to remove null or undefined values:
var array = [0, 1, null, 2, "", 3, undefined, 3,,,,,, 4,, 4,, 5,, 6,,,,];
var filtered = array.filter(function (el) {
return el != null;
});
console....
How do I access the host machine from the guest machine? [closed]
...e command prompt and typing ipconfig. Try replacing the last number with 1 or 2. For example, if your IP address is 192.168.78.128, use http://192.168.78.1:3000.
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Why does auto a=1; compile in C?
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auto is an old C keyword that means "local scope". auto a is the same as auto int a, and because local scope is the default for a variable declared inside a function, it's also the same as int a in this example.
This keyword is actually a leftov...
Check whether or not the current thread is the main thread
Is there any way to check whether or not the current thread is the main thread in Objective-C?
13 Answers
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