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Import error: No module name urllib2
...est and not urllib2.request. The urllib and urllib2 modules from Python 2.x have been combined into the urllib module in Python 3.
– Eli Courtwright
May 8 '10 at 2:05
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What does “fragment” mean in ANTLR?
...erves to simplify a grammar.
Consider:
NUMBER: DIGITS | OCTAL_DIGITS | HEX_DIGITS;
fragment DIGITS: '1'..'9' '0'..'9'*;
fragment OCTAL_DIGITS: '0' '0'..'7'+;
fragment HEX_DIGITS: '0x' ('0'..'9' | 'a'..'f' | 'A'..'F')+;
In this example, matching a NUMBER will always return a NUMBER to the lexer, ...
Convert Elixir string to integer or float
...ger/1 and String.to_float/1.
Hint: See also to_atom/1,to_char_list/1,to_existing_atom/1for other conversions.
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Why does this code using random strings print “hello world”?
The following print statement would print "hello world".
Could anyone explain this?
15 Answers
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How to check if APK is signed or “debug build”?
...import android.content.pm.Signature;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
You can implement an isDebuggable method this way:
private static final X500Principal DEBUG_DN = new X500Principal("CN=Android Debug,O=Android,C=US");
private boolean is...
Bootstrapping still requires outside support
...to actually write a compiler in its own language?
You have to have some existing language to write your new compiler in. If you were writing a new, say, C++ compiler, you would just write it in C++ and compile it with an existing compiler first. On the other hand, if you were creating a compiler...
String.format() to format double in java
How can I use String.format(format String,X) to format a double like follows???
7 Answers
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Java - sending HTTP parameters via POST method easily
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int postDataLength = postData.length;
String request = "http://example.com/index.php";
URL url = new URL( request );
HttpURLConnection conn= (HttpURLConnection) url.openConnection();
conn.setDoOutput( true );
conn.setInstanceFollowRedirects( false );
conn.setReque...
System.BadImageFormatException: Could not load file or assembly [duplicate]
service is x86 compiled even both computers are x64 and it works on my computer. Here in server where is win 2008 i get this error.
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What is __future__ in Python used for and how/when to use it, and how it works
...le changes or to such ones introducing new keywords.
E.g., for using context managers, you had to do from __future__ import with_statement in 2.5, as the with keyword was new and shouldn't be used as variable names any longer. In order to use with as a Python keyword in Python 2.5 or older, you wil...