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How do you calculate log base 2 in Java for integers?
.... For example, Math.ceil(Math.log(1<<29) / Math.log(2)) is 30 on my PC where mathematically it should be exactly 29. I didn't find a value for x where (int)(Math.log(x)/Math.log(2)) fails (just because there are only 32 "dangerous" values), but it does not mean that it will work the same way ...
C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区，为创新赋能！
...我们需要知道——所谓变量，其实是内存地址的一个抽像名字罢了。在静态编译的程序中，所有的变量名都会在编译时被转成内存地址。机器是不知道我们取的名字的，只知道地址。所以有了——栈内存区，堆内存区，静态内存...
SQL update query using joins
...r your requirement:
UPDATE
shopping_cart sc
LEFT JOIN
package pc ON sc. package_id = pc.id
SET
sc. amount = pc.amount
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Running Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on the same machine
...
I wouldn't do it. Use virtual PCs instead. It might take a little setup, but you'll thank yourself in the long run. In my experience, you can't really get them cleanly installed side by side and unless they are standalone installs you can't really verify ...
What is the difference between a process and a thread?
...of execution, maintaining the thread's state via a single program counter (PC), and set of registers. But what happens when there's a cache miss? It takes a long time to fetch data from main memory, and while that's happening the CPU is just sitting there idle. So someone had the idea to basicall...
Chrome's remote debugging (USB debugging) not working for Samsung Galaxy S3 running android 4.3
... USB Debugging," which is what is supposed to happen when you connect to a PC. When I ran adb devices on my PC, it listed my device, and then on the device screen the "Allow USB Debugging" prompt came up. From there on out, it worked!
– Josh
Jul 28 '14 at 18:04...
print call stack in C or C++
...xt);
while (unw_step(&cursor) > 0) {
unw_word_t offset, pc;
unw_get_reg(&cursor, UNW_REG_IP, &pc);
if (pc == 0) {
break;
}
printf("0x%lx:", pc);
if (unw_get_proc_name(&cursor, sym, sizeof(sym), &offset) == 0) {
...
View contents of database file in Android Studio
...load and install SQLiteBrowser.
Copy the database from the device to your PC:
Android Studio versions < 3.0:
Open DDMS via Tools > Android > Android Device Monitor
Click on your device on the left.
You should see your application:
Go to File Explorer (one of the tabs on the right), go...
How do I connect to this localhost from another computer on the same network?
... the terminal, on MAC and LINUX type ifconfig |grep inet, on WINDOWS type ipconfig. Let's assume the IP address of this computer is 192.168.1.5.
3b Edit the hosts file on the computer you are trying to access the website from.:
Again, on MAC, this file is in /private/etc/hosts; on LINUX, in /et...
How do I find out my MySQL URL, host, port and username?
..._name | Value |
+---------------+-----------+
| hostname | karola-pc |
+---------------+-----------+
1 row in set (0.00 sec)
For Example in my case : karola-pc is the host name of the box where my mysql is running. And it my local PC host name.
If it is romote box than you can ping tha...