大约有 47,000 项符合查询结果（耗时：0.0541秒） [XML]
How to create module-wide variables in Python? [duplicate]
...r this example, the simple if not __DBNAME__ test is adequate, because any string value other than an empty string will evaluate true, so any actual database name will evaluate true. But for variables that might contain a number value that might be 0, you can't just say if not variablename; in that...
Finding all possible combinations of numbers to reach a given sum
... x;
if (s == target)
System.out.println("sum("+Arrays.toString(partial.toArray())+")="+target);
if (s >= target)
return;
for(int i=0;i<numbers.size();i++) {
ArrayList<Integer> remaining = new ArrayList<Integer>();
...
How do I pass variables and data from PHP to JavaScript?
...beyond, limbo, the city of shimmers, and Canada.
*
* AJAX generally uses strings, but you can output JSON, HTML and XML as well.
* It all depends on the Content-type header that you send with your AJAX
* request. */
echo json_encode(42); // In the end, you need to echo the result.
...
Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
...fo.plist and change the value of <key>KSUpdateURL</key> to <string>https://tools.google.com/abcdefg</string>. No other method worked for me (including setting defaults write com.google.Keystone.Agent checkInterval 0).
– Abhishek Divekar
...
Pandas percentage of total with groupby
... doesn't intuitively make sense (especially when some of the cells contain strings like AZ, ...).
– dhardy
Feb 6 '15 at 9:42
6
...
How do I use valgrind to find memory leaks?
...the C code I wrote too:
#include <stdlib.h>
int main() {
char* string = malloc(5 * sizeof(char)); //LEAK: not freed!
return 0;
}
Well, there were 5 bytes lost. How did it happen? The error report just says
main and malloc. In a larger program, that would be seriously troublesome t...
Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti
...ept over if/else if that results in
speed-ups (for example by preventing extra lookups)
cleaner code (fewer lines/easier to read)
Often, these go hand-in-hand.
speed-ups
In the case of trying to find an element in a long list by:
try:
x = my_list[index]
except IndexError:
x = 'NO_AB...
Skip callbacks on Factory Girl and Rspec
... create users without the callback by default because the methods used run extra stuff I don't normally want in my test examples.
----------UPDATE------------
I stopped using skip_callback because there were some inconsistency issues in the test suite.
Alternative Solution 1 (use of stub and unstu...
Convert Base64 string to an image file? [duplicate]
I am trying to convert my base64 image string to an image file. This is my Base64 string:
8 Answers
...
How do I map lists of nested objects with Dapper
...ltiplication across locations, I use Distinct() to remove potential dups:
string query = @"SELECT c.*, l.*
FROM Course c
INNER JOIN Location l ON c.LocationId = l.Id";
using (SqlConnection conn = DB.getConnection())
{
conn.Open();
var courseDictionary = new Dictionary<Guid, Cours...