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What is the opposite of 'parse'? [closed]
I have a function, parseQuery, that parses a SQL query into an abstract representation of that query.
33 Answers
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How to get the concrete class name as a string? [duplicate]
...classes themselves as keys, not necessarily the classnames
typefunc={
int:lambda x: x*2,
str:lambda s:'(*(%s)*)'%s
}
def transform (param):
print typefunc[type(param)](param)
transform (1)
>>> 2
transform ("hi")
>>> (*(hi)*)
here typefunc is a dict that maps a func...
Sorting dictionary keys in python [duplicate]
I have a dict where each key references an int value. What's the best way to sort the keys into a list depending on the values?
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How do I forward declare an inner class? [duplicate]
...not make sense in this context and is doubtful to be accurate. The whole point of a forward declaration is that you are telling the compiler that there is a class (or in this case, an inner class). That specific statement of yours would be just as true of normal classes and would mean you can't forw...
Are nested transactions allowed in MySQL?
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InnoDB supports SAVEPOINTS.
You can do the following:
CREATE TABLE t_test (id INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;
START TRANSACTION;
INSERT
INTO t_test
VALUES (1);
SELECT *
FROM t_test;
id
---
1
SAVEPOINT tran2;
INSERT
INTO...
Iterating over all the keys of a map
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https://play.golang.org/p/JGZ7mN0-U-
for k, v := range m {
fmt.Printf("key[%s] value[%s]\n", k, v)
}
or
for k := range m {
fmt.Printf("key[%s] value[%s]\n", k, m[k])
}
Go language specs for for statements specifies that the first value is the key, the second variable is the value,...
get string value from UISegmentedControl
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[segmentedControl titleForSegmentAtIndex:int];
For the current selected index
[segmentedControl titleForSegmentAtIndex:[segmentedControl selectedSegmentIndex]];
share
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python ? (conditional/ternary) operator for assignments [duplicate]
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@karadoc right point but bad example&no explanation for the second example: for beginners: if "something" is considered empty/falsy => it is evaluated to False => so you will NEVER get values like 0 (int zero), ""(empty string), [] ...
How to remove not null constraint in sql server using query
I am trying to remove not null constraint in sql server 2008 without losing data.
4 Answers
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What do column flags mean in MySQL Workbench?
...UQ - Create/remove Unique Key
ZF - Zero-Filled (if the length is 5 like INT(5) then every field is filled with 0’s to the 5th digit. 12 = 00012, 400 = 00400, etc. )
AI - Auto Increment
G - Generated column. i.e. value generated by a formula based on the other columns
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