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Install Application programmatically on Android

...<application android:allowBackup="true" android:label="@string/app_name"> <provider android:name="android.support.v4.content.FileProvider" android:authorities="${applicationId}.authorityStr" android:exported="false" and...
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Difference between size_t and unsigned int?

...int is not the only unsigned integer type. size_t could be any of unsigned char, unsigned short, unsigned int, unsigned long or unsigned long long, depending on the implementation. Second question is that size_t and unsigned int are interchangeable or not and if not then why? They aren't inter...
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What is a non-capturing group in regular expressions?

...up 3: "n" Group 4: "sectetuer" ... So, if we apply the substitution string: $1_$3$2_$4 ... over it, we are trying to use the first group, add an underscore, use the third group, then the second group, add another underscore, and then the fourth group. The resulting string would be like the...
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How to export query result to csv in Oracle SQL Developer?

... CSV Export does not escape your data. Watch out for strings which end in \ because the resulting \" will look like an escaped " and not a \. Then you have the wrong number of " and your entire row is broken. ...
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How to convert floats to human-readable fractions?

....com/ShowCode.asp?ID=582): Public Function Dec2Frac(ByVal f As Double) As String Dim df As Double Dim lUpperPart As Long Dim lLowerPart As Long lUpperPart = 1 lLowerPart = 1 df = lUpperPart / lLowerPart While (df <> f) If (df < f) Then lUpperPart = lU...
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Fastest method of screen capturing on Windows

...e a class that implemented the GDI method for screen capture. I too wanted extra speed so, after discovering the DirectX method (via GetFrontBuffer) I tried that, expecting it to be faster. I was dismayed to find that GDI performs about 2.5x faster. After 100 trials capturing my dual monitor displa...
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How to create a trie in Python

... Static memory-efficient Trie structures for Python (2.x and 3.x). String data in a MARISA-trie may take up to 50x-100x less memory than in a standard Python dict; the raw lookup speed is comparable; trie also provides fast advanced methods like prefix search. Based on marisa-trie C...
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How do I escape spaces in path for scp copy in Linux?

...\ c' . does not work scp localhost:'f/a b c' . The reason is that the string is interpreted by the shell before the path is passed to the scp command. So when it gets to the remote the remote is looking for a string with unescaped quotes and it fails To see this in action, start a shell with ...
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How does the Java 'for each' loop work?

... for (Iterator<String> i = someIterable.iterator(); i.hasNext();) { String item = i.next(); System.out.println(item); } Note that if you need to use i.remove(); in your loop, or access the actual iterator in some way, you canno...
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Getting RAW Soap Data from a Web Reference Client running in ASP.net

... break; } } public void Log(SoapMessage message, string stage) { newStream.Position = 0; string contents = (message is SoapServerMessage) ? "SoapRequest " : "SoapResponse "; contents += stage + ";"; StreamReader reader = new StreamReade...