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edited Aug 14 '17 at 8:40
wonea
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answered A...
Is the SQL WHERE clause short-circuit evaluated?
...
ANSI SQL Draft 2003 5WD-01-Framework-2003-09.pdf
6.3.3.3 Rule evaluation order
[...]
Where the precedence is not determined by the Formats or by
parentheses, effective evaluation of expressions is generally
performed from left to right. How...
How to check if a string is a valid JSON string in JavaScript without using Try/Catch
... it will work in most cases, not all cases.
Have a look around the line 450 in https://github.com/douglascrockford/JSON-js/blob/master/json2.js
There is a regexp that check for a valid JSON, something like:
if (/^[\],:{}\s]*$/.test(text.replace(/\\["\\\/bfnrtu]/g, '@').
replace(/"[^"\\\n\r]*"|tru...
Changing every value in a hash in Ruby
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180
If you want the actual strings themselves to mutate in place (possibly and desirably affecting o...
Send response to all clients except sender
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postgres: upgrade a user to be a superuser?
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Aditya Kresna Permana
9,64977 gold badges3030 silver badges3535 bronze badges
answered May 25 '12 at 15:46
QuassnoiQuassnoi
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Python list of dictionaries search
...rator expression:
>>> dicts = [
... { "name": "Tom", "age": 10 },
... { "name": "Mark", "age": 5 },
... { "name": "Pam", "age": 7 },
... { "name": "Dick", "age": 12 }
... ]
>>> next(item for item in dicts if item["name"] == "Pam")
{'age': 7, 'name': 'Pam'}
If yo...
Does disposing streamreader close the stream?
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205
Yes, StreamReader, StreamWriter, BinaryReader and BinaryWriter all close/dispose their underlyi...
Inner join vs Where
...look at these two tables:
CREATE TABLE table1 (
id INT,
name VARCHAR(20)
);
CREATE TABLE table2 (
id INT,
name VARCHAR(20)
);
The execution plan for the query using the inner join:
-- with inner join
EXPLAIN PLAN FOR
SELECT * FROM table1 t1
INNER JOIN table2 t2 ON t1.id = t2.id;
SELEC...
switch case statement error: case expressions must be constant expression
...the resource R class are declared like this:
public static final int main=0x7f030004;
However, as of ADT 14, in a library project, they will be declared like this:
public static int main=0x7f030004;
In other words, the constants are not final in a library project.
Therefore your code would no ...