大约有 6,885 项符合查询结果（耗时：0.0201秒） [XML]
On Duplicate Key Update same as insert
...INE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=1;
Step 2: Create an index of two columns to prevent duplicate data using following SQL Query:
ALTER TABLE `user` ADD INDEX no_duplicate (`username`, `password`);
or, Create an index of two column from GUI as follows:
Step 3: Update if exi...
Find a pair of elements from an array whose sum equals a given number
...sum
for i=0 to arr.length - 1 do
# key is the element and value is its index.
hash(arr[i]) = i
end-for
for i=0 to arr.length - 1 do
# if K-th element exists and it's different then we found a pair
if hash(K - arr[i]) != i
print "pair i , hash(K - arr[i]) has sum K"
end-if
end-fo...
How to determine if Javascript array contains an object with an attribute that equals a given value?
...whether or not "something" is in, you can just check the value of the scan index with the size of array. For this to work the index var needs to be declared before the for statement of course.
– Alex
Oct 29 '14 at 21:05
...
Get/pick an image from Android's built-in Gallery app programmatically
... null, null);
if( cursor != null ){
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String path = cursor.getString(column_index);
cursor.close();
...
How do I capitalize first letter of first name and last name in C#?
...r))
{
var words = str.Split(' ');
for (int index = 0; index < words.Length; index++)
{
var s = words[index];
if (s.Length > 0)
{
words[index] = s[0].ToString().ToUpper() + s.Substrin...
HTML “overlay” which allows clicks to fall through to elements behind it [duplicate]
...tisfied me was to have the canvas cover everything and then to raise the Z-index of all clickable elements. You can't draw on them, but at least they are clickable...
share
|
improve this answer
...
Stash changes while keeping the changes in the working directory in Git
...stage the changes you want to keep, and then stash everything using --keep-index:
$ git add modified-file.txt
$ git stash push --keep-index
The commands above will stash everything, but it will leave the files staged in your working directory.
From the official Linux Kernel Git documentation for gi...
Remove last item from array
...is:
arr.slice([begin[, end]])
Here,
the begin parameter is zero-based index at which extraction from an array starts. So, lets say based on above example if we do something like
arr.slice(0) // returns [1,0,2]
it would return all the array elements from start of sequence from position 0 a...
How to check for a valid Base64 encoded string
... // 98% of all non base64 values are invalidated by this time.
var index = value.Length - 1;
// if there is padding step back
if (value[index] == '=')
index--;
// if there are two padding chars step back a second time
if (value[index] == '=')
...
How to download an entire directory and subdirectories using wget?
...rom http://websitename.com/wp-content/uploads/2009/05 but all I got was an index.html file which had nothing. I can't figure what I missed.
– Vivek Todi
Jan 7 '15 at 13:16
...