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Iterating over Java collections in Scala
...e to use the iterator in a for each style loop, so I have been trying to convert it to a native Scala collection but will no luck.
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Where is the WPF Numeric UpDown control?
...s e)
{
int number;
if (NUDTextBox.Text != "") number = Convert.ToInt32(NUDTextBox.Text);
else number = 0;
if (number < maxvalue)
NUDTextBox.Text = Convert.ToString(number + 1);
}
private void NUDButtonDown_Click(object sender, RoutedEventA...
记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...t launching mongod like this to avoid performance problems: numactl –interleave=all mongod [other options]
当时我并不太清楚NUMA是什么东西，所以没有处理，只是把问题反馈给了运维人员，后来知道运维人员也没有理会这茬儿，所以问题的序幕就...
In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros? [dupli
I'm working with some example java code for making md5 hashes. One part converts the results from bytes to a string of hex digits:
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How to identify whether a file is normal file or directory
...standard library, which provides an object oriented approach to handle filesystem paths. The relavant methods would be .is_file() and .is_dir():
In [1]: from pathlib import Path
In [2]: p = Path('/usr')
In [3]: p.is_file()
Out[3]: False
In [4]: p.is_dir()
Out[4]: True
In [5]: q = p / 'bin' / 'v...
How to convert a char array back to a string?
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This will convert char array back to string:
char[] charArray = {'a', 'b', 'c'};
String str = String.valueOf(charArray);
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Create Pandas DataFrame from a string
...input_string
df = pd.DataFrame([x.split(';') for x in data.split('\n')])
print(df)
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Insert results of a stored procedure into a temporary table
How do I do a SELECT * INTO [temp table] FROM [stored procedure] ? Not FROM [Table] and without defining [temp table] ?
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What's the fastest way to convert String to Number in JavaScript?
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There are at least 5 ways to do this:
If you want to convert to integers only, another fast (and short) way is the double-bitwise not (i.e. using two tilde characters):
e.g.
~~x;
Reference: http://james.padolsey.com/cool-stuff/double-bitwise-not/
The 5 common ways I know so...
ObjectiveC Parse Integer from String
...eger) from an array and then use it as an int in a function. I'm trying to convert it to a int using intValue.
6 Answers
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