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Python: How to get stdout after running os.system? [duplicate]
...d is the stdout output, then take a look at subprocess.check_output():
import subprocess
batcmd="dir"
result = subprocess.check_output(batcmd, shell=True)
Because you were using os.system(), you'd have to set shell=True to get the same behaviour. You do want to heed the security concerns about p...
boost Composite keys - C/C++ - 清泛网 - 专注C/C++及内核技术
...te keysComposite keysIn relational databases, composite keys depend on two or more fields of a given table The analogous concept in Boost MultiIndex is Composite keys
In relational databases, composite keys depend on two or more fields of a given table. The analogous concept in Boost.MultiIndex ...
Error: Cannot pull with rebase: You have unstaged changes
I have started collaborating with a few friends on a project & they use the heroku git repository.
8 Answers
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Why are there two kinds of functions in Elixir?
...named function and the other is an anonymous one. But you are right, they work somewhat differently and I am going to illustrate why they work like that.
Let's start with the second, fn. fn is a closure, similar to a lambda in Ruby. We can create it as follows:
x = 1
fun = fn y -> x + y end
fun...
When should an IllegalArgumentException be thrown?
I'm worried that this is a runtime exception so it should probably be used sparingly.
Standard use case:
6 Answers
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What are the best practices for SQLite on Android?
...nd reads are generally OK from multiple threads, but Brad's answer is not correct. You have to be careful with how you create your connections and use them. There are situations where your update calls will fail, even if your database doesn't get corrupted.
The basic answer.
The SqliteOpenHelper...
Passing enum or object through an intent (the best solution)
... everybody fails to mention that Enums are actually Serializable and therefore can perfectly be added to an Intent as an extra. Like this:
public enum AwesomeEnum {
SOMETHING, OTHER;
}
intent.putExtra("AwesomeEnum", AwesomeEnum.SOMETHING);
AwesomeEnum result = (AwesomeEnum) intent.getSerializab...
Angular JS break ForEach
I have an angular foreach loop and i want to break from loop if i match a value. The following code does not work.
21 Answe...
Why doesn't the height of a container element increase if it contains floated elements?
I would like to ask how height and float work. I have an outer div and an inner div that has content in it. Its height may vary depending on the content of the inner div but it seems that my inner div will overflow its outside div. What would be the proper way to do it?
...
How slow are .NET exceptions?
...xceptions. I wish to resolve a simple issue. 99% of the time the argument for not throwing exceptions revolves around them being slow while the other side claims (with benchmark test) that the speed is not the issue. I've read numerous blogs, articles, and posts pertaining one side or the other. So ...