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How to unzip files programmatically in Android?
... filename = ze.getName();
// Need to create directories if not exists, or
// it will generate an Exception...
if (ze.isDirectory()) {
File fmd = new File(path + filename);
fmd.mkdirs();
continue;
...
C++常用排序算法汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术
...rr,int len)
{
int i,j;
for(i=0;i<len;i++)
for(j=i+1;j<len;j++)
if(arr[i] > arr[j])
{
int exchange = arr[i];
arr[i] = arr[j];
arr[j] = exchange;
}
}
/*
第二种形式的选择排序，减少了元素互换的操作
选择排序后的顺序为从小到大
*/
...
Objective-C: Reading a file line by line
...d save any remaining characters for the next read, or read more characters if a newline hasn't been read yet. (NSFileHandle lets you read an NSData which you can then convert to an NSString, but it's essentially the same process.)
Apple has a Stream Programming Guide that can help fill in the detai...
Get Image size WITHOUT loading image into memory
...In addition the docs say:
open(file, mode=”r”)
Opens and identifies the given image file.
This is a lazy operation; this function identifies the file, but the actual image data is not read from the file until you try to process the data (or call the load method).
Digging deeper...
Implicit “Submit” after hitting Done on the keyboard at the last EditText
I've used some apps where when I fill my username, then go to my password, if I hit "Done" on the keyboard, the login form is automatically submitted, without me having to click the submit button. How is this done?
...
Rounding up to next power of 2
...te a function that returns the nearest next power of 2 number. For example if my input is 789, the output should be 1024. Is there any way of achieving this without using any loops but just using some bitwise operators?
...
How to secure database passwords in PHP?
...base connection it of course generally needs to pass a login and password. If I'm using a single, minimum-permission login for my application, then the PHP needs to know that login and password somewhere. What is the best way to secure that password? It seems like just writing it in the PHP code isn...
When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
...No man's land' for aligned allocations. Using a
0xBD different value here than 0xFD allows the runtime
to detect not only writing outside the allocation,
but to also identify mixing alignment-specific
all...
How to get hosting Activity from a view?
...xt = getContext();
while (context instanceof ContextWrapper) {
if (context instanceof Activity) {
return (Activity)context;
}
context = ((ContextWrapper)context).getBaseContext();
}
return null;
}
...
npm command to uninstall or prune unused packages in Node.js
...e.json.
From npm help prune:
This command removes "extraneous" packages. If a package name is provided, then only packages matching one of the supplied names are removed.
Extraneous packages are packages that are not listed on the parent package's dependencies list.
If the --production flag is spe...