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Python: using a recursive algorithm as a generator
... In Python 3.4, you can replace the last two lines with yield from getPermutations(string[:i] + string[i+1:]), which is more efficient in many ways!
– Manuel Ebert
Apr 29 '14 at 17:46
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How to open a second activity on click of button in android app
...thod:
public void sendMessage(View view) {
Intent intent = new Intent(FromActivity.this, ToActivity.class);
startActivity(intent);
}
And the most important thing: don't forget to define your activity in manifest.xml
<activity>
android:name=".ToActivity"
android:label="...
Parse an HTML string with JS
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Problem: I need to get links from <frame> tag. But with this solution, the frame tag are deleted...
– stage
May 21 '12 at 10:10
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In C#, why is String a reference type that behaves like a value type?
... to this situation where we have a type with value sematics not inheriting from System.ValueType. Thanks Ben.)
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What's the difference between using CGFloat and float?
...a double on 64-bit systems. However, the decision to do that was inherited from OS X, where it was made based on the performance characteristics of early PowerPC CPUs. In other words, you should not think that float is for 32-bit CPUs and double is for 64-bit CPUs. (I believe, Apple's ARM processors...
How to put a new line into a wpf TextBlock control?
I'm fetching text from an XML file, and I'd like to insert some new lines that are interpreted by the textblock render as new lines.
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When to use -retainCount?
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To add to this, any information you could gain from -retainCount can be gotten (with much more detail) from Instruments and its tools.
– Dave DeLong
Jan 8 '11 at 21:45
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Reload the path in PowerShell
...with variable expansion) with a simple command:
refreshenv
Installation from cmd (requires administrator rights):
@"%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -InputFormat None -ExecutionPolicy Bypass -Command "iex ((New-Object System.Net.WebClient).DownloadString('h...
Immutable vs Mutable types
...he float object is considered to be immutable, with this type of example from my book:
16 Answers
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How can I remove non-ASCII characters but leave periods and spaces using Python?
I'm working with a .txt file. I want a string of the text from the file with no non-ASCII characters. However, I want to leave spaces and periods. At present, I'm stripping those too. Here's the code:
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