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Maximum number of records in a MySQL database table
...ut you don't have to make your primary key an integer, you could make it a CHAR(100). You could also declare the primary key over more than one column.
There are other constraints on table size besides number of rows. For instance you could use an operating system that has a file size limitation. ...
ATL正则表达式库使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
... * szIN，是一个 const指针，这表明我们可以方便得使用std::string类的c_str()方法给其传递参数。
Match的结果通过第二个参数pContext所指向的CAtlREMatchContext<>类来返回，Match 的结果及其相关信息都被存放在CAtlREMatchContext类中，我们只要...
How do you know when to use fold-left and when to use fold-right?
...
The extra stack frames will definitely make a difference for large lists. If your stack frames exceed the size of the processor's cache, then your cache-misses are going to affect performance. Unless the list is doubly-linked, it...
Clear android application user data
...mission.
So, run su first.
Here is the sample code:
private static final String CHARSET_NAME = "UTF-8";
String cmd = "pm clear com.android.browser";
ProcessBuilder pb = new ProcessBuilder().redirectErrorStream(true).command("su");
Process p = pb.start();
// We must handle the result stream in an...
Calculating arithmetic mean (one type of average) in Python
...tinuous integration systems like Travis CI, installing numpy takes several extra minutes. If quick and light build is valuable to you, and you need only the mean, consider.
– Akseli Palén
Mar 7 '16 at 11:36
...
How to change letter spacing in a Textview?
...ntent.Context;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.style.ScaleXSpan;
import android.util.AttributeSet;
import android.widget.TextView;
public class LetterSpacingTextView extends TextView {
private float letterSpacing = LetterSpacing.BIGGEST;
...
Composer killed while updating
...
DigitalOcean fix that does not require extra memory - activating swap, here is an example for 1gb:
in terminal run below
/bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024
/sbin/mkswap /var/swap.1
sudo /sbin/swapon /var/swap.1
The above solution will work un...
Ways to implement data versioning in MongoDB
...Mongoid has built in simple versioning
http://mongoid.org/en/mongoid/docs/extras.html#versioning
mongoid-history is a Ruby plugin that provides a significantly more complicated solution with auditing, undo and redo
https://github.com/aq1018/mongoid-history
...
Strange out of memory issue while loading an image to a Bitmap object
...);
int imageHeight = options.outHeight;
int imageWidth = options.outWidth;
String imageType = options.outMimeType;
To avoid java.lang.OutOfMemory exceptions, check the dimensions of a bitmap before decoding it, unless you absolutely trust the source to provide you with predictably sized image data...
Instagram how to get my user id from username?
...orking (but its not public endpoint anymore), you must send a request with extra information to that endpoint. (Press F12 to open developer toolbar, then click to Network Tab and trace the request.)
Sorry because I'm too busy. Hope this information help you guys.
Hmm, feel free to give me a down-v...