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INT 10H 中断介绍 - C/C++ - 清泛网 - 专注C/C++及内核技术
...DH = 行
DL = 列
4
置显示页
AL = 显示页号
5
屏幕初始化或上卷
6
屏幕初始化或上卷
AL = 上卷行数
AL =0全屏幕为空白
BH = 卷入行属性
...
Code Golf - π day
...formula as FORTRAN solution (slightly different results than test cases). Calculates X^2=R^2-Y^2 for every Y
[rdPr1-d0<p]sp1?dsMdd*sRd2%--
[dd*lRr-vddlMr-32rlpxRR42r2*lpxRRAP4*2+lN+sN2+dlM>y]
dsyx5klNlR/p
88 chars. Iterative solution. Matches test cases. For every X and Y checks if X^2+Y^2&...
How to split a column into two columns?
... row
0 00000 UNITED STATES
1 01000 ALABAMA
2 01001 Autauga County, AL
3 01003 Baldwin County, AL
4 01005 Barbour County, AL
df = pd.DataFrame(df.row.str.split(' ',1).tolist(),
columns = ['flips','row'])
fl...
汇编语言超浓缩教程（汇编入门必备） - C/C++ - 清泛网 - 专注C/C++及内核技术
...示原结果，故找一赝品将就着。
Program terminated normally
我们可以用Ｕ命令将十六进制的机器码反汇编（Unassemble）成汇编指令。你将发现每一行右边的汇编指令就是被汇编成相应的机器码，而8086实际上就是以机器码来...
How to iterate over arguments in a Bash script
...
Use "$@" to represent all the arguments:
for var in "$@"
do
echo "$var"
done
This will iterate over each argument and print it out on a separate line. $@ behaves like $* except that when quoted the arguments are broken up properly if there...
Twitter Bootstrap - Tabs - URL doesn't change
...and it doesn't matter what .tab('show') returns, it will still try. When evaluating logic in this way, if the first part of the equation (before &&) is false, there is no need to continue evaluating, so the tab won't be shown. You could achieve the same effect like this: if(hash){ $('ul.nav ...
Test if a command outputs an empty string
...'s answer for a better solution.
Empty output
Commands don’t return values – they output them. You can capture this output by using command substitution; e.g. $(ls -A). You can test for a non-empty string in Bash like this:
if [[ $(ls -A) ]]; then
echo "there are files"
else
echo "n...
Skip List vs. Binary Search Tree
...concurrent problems come in when the tree is modified it often needs to rebalance. The rebalance operation can affect large portions of the tree, which would require a mutex lock on many of the tree nodes. Inserting a node into a skip list is far more localized, only nodes directly linked to the a...
【原因】Al伴侣出现错误: invoke: no method named Theme' in class edu.mi...
运行故障：
Al伴侣出现错误: invoke: no method named Theme' in class edu.mit.appinventor.aicompanion3.Screen1
原因：aiStarter中AI伴侣版本 或者 其他任何途径中的AI伴侣版本过低导致的。
解决：升级到最新的AI伴侣即可。
升级可参考：https:...
Data structure: insert, remove, contains, get random element, all at O(1)
...ray A. The hashtable keys are the elements in the data structure, and the values are their positions in the array.
insert(value): append the value to array and let i be its index in A. Set H[value]=i.
remove(value): We are going to replace the cell that contains value in A with the last element in...