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Python Script execute commands in Terminal
... subprocess module instead.
Read here: reading a os.popen(command) into a string
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Why is list initialization (using curly braces) better than the alternatives?
...t be converted to another integer that cannot hold its value. For example, char
to int is allowed, but not int to char.
A floating-point value cannot be converted to another floating-point type that cannot hold its
value. For example, float to double is allowed, but not double to float.
A floating-p...
differentiate null=True, blank=True in django
...ngo are never saved as NULL. Blank values are stored in the DB as an empty string ('').
A few examples:
models.DateTimeField(blank=True) # raises IntegrityError if blank
models.DateTimeField(null=True) # NULL allowed, but must be filled out in a form
Obviously, Those two options don't make logi...
Difference between Java Enumeration and Iterator
...CC, EEE. ----------------------------------------------------- Vector<String> v=new Vector<String>(6); v.add("AAA"); v.add("BBB"); v.add("CCC"); v.add("DDD"); v.add("EEE"); v.add("FFF"); Enumeration<String> en = v.elements(); while(en.hasMoreElements()) String value=(String) en.n...
Correct way to use StringBuilder in SQL
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The aim of using StringBuilder, i.e reducing memory. Is it achieved?
No, not at all. That code is not using StringBuilder correctly. (I think you've misquoted it, though; surely there aren't quotes around id2 and table?)
Note that the aim ...
SQL Server indexes - ascending or descending, what difference does it make?
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CREATE TABLE T1( [ID] [int] IDENTITY NOT NULL,
[Filler] [char](8000) NULL,
PRIMARY KEY CLUSTERED ([ID] ASC))
The Query
SELECT TOP 10 *
FROM T1
ORDER BY ID DESC
Uses an ordered scan with scan direction BACKWARD as can be seen in the Execution Plan. There is a s...
What is the most efficient way to deep clone an object in JavaScript?
...nly supported by Firefox . I've done things like obj = JSON.parse(JSON.stringify(o)); but question the efficiency. I've also seen recursive copying functions with various flaws.
I'm surprised no canonical solution exists.
...
How to evaluate a math expression given in string form?
I'm trying to write a Java routine to evaluate math expressions from String values like:
25 Answers
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How do you write multiline strings in Go?
Does Go have anything similar to Python's multiline strings:
9 Answers
9
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simple HTTP server in Java using only Java SE API
...t.httpserver.HttpServer;
public class Test {
public static void main(String[] args) throws Exception {
HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0);
server.createContext("/test", new MyHandler());
server.setExecutor(null); // creates a default e...