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What is the string length of a GUID?
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It depends on how you format the Guid:
Guid.NewGuid().ToString() => 36 characters (Hyphenated)
outputs: 12345678-1234-1234-1234-123456789abc
Guid.NewGuid().ToString("D") => 36 characters (Hyphenated, same as ToString...
When should you use 'friend' in C++?
...d was curious about the friend declaration. I personally have never used it, however I am interested in exploring the language.
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Does Android keep the .apk files? if so where?
After android installs an application from the Marketplace, does it keep the .apk file?
19 Answers
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When should we use intern method of String on String literals
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Java automatically interns String literals. This means that in many cases, the == operator appears to work for Strings in the same way that it does for ints or other primitive values.
Since interning is automatic for String literals, the intern() method is to...
Hash function that produces short hashes?
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You can use any commonly available hash algorithm (eg. SHA-1), which will give you a slightly longer result than what you need. Simply truncate the result to the desired length, which may be good enough.
For example, in Python:
>>> import hashlib
>>>...
How can I make one python file run another? [duplicate]
...em in order of inverted preference (i.e., best first, worst last):
Treat it like a module: import file. This is good because it's secure, fast, and maintainable. Code gets reused as it's supposed to be done. Most Python libraries run using multiple methods stretched over lots of files. Highly reco...
Bring a window to the front in WPF
...Activate();
Attempts to bring the window to the foreground and activates it.
That should do the trick, unless I misunderstood and you want Always on Top behavior. In that case you want:
myWindow.TopMost = true;
share
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How can I determine the current line number in JavaScript?
...g the line number of the currently executing statement (and if so, what is it)?
8 Answers
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(Built-in) way in JavaScript to check if a string is a valid number
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To check if a variable (including a string) is a number, check if it is not a number:
This works regardless of whether the variable content is a string or number.
isNaN(num) // returns true if the variable does NOT contain a valid number
Examples
isNaN(123) // false
isN...
Why does JavaScript only work after opening developer tools in IE once?
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It sounds like you might have some debugging code in your javascript.
The experience you're describing is typical of code which contain console.log() or any of the other console functionality.
The console object is only act...