大约有 22,000 项符合查询结果（耗时：0.0253秒） [XML]
boolean in an if statement
...y value of booleanValue including true, any non-zero number, any non-empty string value, any object or array reference, etc...
On the other hand:
if (booleanValue === true)
This will only satisfy the if condition if booleanValue is exactly equal to true. No other truthy value will satisfy it.
...
Have bash script answer interactive prompts [duplicate]
...
Unfortunately I can't use expect as their are stringent space requirements on the system running this so I can't add extra packages, but piping yes in did the trick, luckily all the prompts only required a 'y' anyway. Thanks.
– TJ L
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Zooming MKMapView to fit annotation pins?
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Very nice solution!!! Here's an extra little touch to add some padding: double inset = -zoomRect.size.width * 0.1; [self.mapView setVisibleMapRect:MKMapRectInset(zoomRect, inset, inset) animated:YES];
– Craig B
Aug 5 '...
Can CSS force a line break after each word in an element?
...es a line-break wherever a line-break appears in the code, but ignores the extra whitespace (tabs and spaces etc.).
First, write your words on separate lines in your code:
<div>Short
Word</div>
Then apply the style to the element containing the words.
div { white-space: pre-line; }...
UnicodeDecodeError: 'utf8' codec can't decode byte 0x9c
...ote: This will strip out (ignore) the characters in question returning the string without them.
For me this is ideal case since I'm using it as protection against non-ASCII input which is not allowed by my application.
Alternatively: Use the open method from the codecs module to read in the file:
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Inline functions in C#?
...nline function is.
Let's say you have this code:
private void OutputItem(string x)
{
Console.WriteLine(x);
//maybe encapsulate additional logic to decide
// whether to also write the message to Trace or a log file
}
public IList<string> BuildListAndOutput(IEnumerable<string...
How do I find the location of the executable in C? [duplicate]
...tModuleFileName. Instead, just #include <windows.h> and use the path string provided automatically by Windows in _pgmptr. It's easier than using the GetModuleFileName function because that has the possibility of failing.
– rsethc
May 1 '13 at 1:43
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How do I execute a string containing Python code in Python?
How do I execute a string containing Python code in Python?
14 Answers
14
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MySQL Error 1215: Cannot add foreign key constraint
... @www.jensolsson.se You are correct, if the PK includes one or more string columns then they must use the same character set and collation. In this specific case the PK was an INT so the character set of the table and/or columns was not relevant.
– Ike Walker
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Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
... compressed size: " + bucket[i].compressedOut.size()
+ String.format(" compression factor: %.2f", ((double)bucket[i].compressedOut.size())/bucketSize));
}
System.out.println(String.format("Data size: %.2fM",(double)size/(1014*1024))
+ String.forma...