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Accessing an SQLite Database in Swift
...er and get a bit familiar with Swift in the process. You can find it here: https://github.com/chrismsimpson/SwiftSQLite.
var db = SQLiteDatabase();
db.open("/path/to/database.sqlite");
var statement = SQLiteStatement(database: db);
if ( statement.prepare("SELECT * FROM tableName WHERE Id = ?") !=...
How can I remove non-ASCII characters but leave periods and spaces using Python?
...sub(r'[^\x00-\x7f]',r'', your-non-ascii-string)
See more examples here http://stackoverflow.com/questions/20078816/replace-non-ascii-characters-with-a-single-space/20079244#20079244
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数据结构、算法复杂度一览表 - 更多技术 - 清泛网移动版 - 专注C/C++及内核技术
...w-Thy-Complexities常用算法、数据结构复杂度一览表。来源：http://bigocheatsheet.com/
搜索算法(来源)
算法
数据结构
时间复杂度
空间复杂度
平均
最差
最差
深度优先搜索
图G(V,E), V...
Format numbers to strings in Python
... tax: $14.07'
>>> d = {'web': 'user', 'page': 42}
>>> 'http://xxx.yyy.zzz/%(web)s/%(page)d.html' % d
'http://xxx.yyy.zzz/user/42.html'
Here are the equivalent snippets but using str.format():
>>> "Name: {0}, age: {1}".format('John', 35)
'Name: John, age: 35'
>&...
PostgreSQL query to list all table names?
...
How about giving just \dt in psql? See https://www.postgresql.org/docs/current/static/app-psql.html.
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html5 localStorage error with Safari: “QUOTA_EXCEEDED_ERR: DOM Exception 22: An attempt was made to
...n isLocalStorageNameSupported() to test that you can also set some value.
https://github.com/marcuswestin/store.js/issues/42
function isLocalStorageNameSupported()
{
var testKey = 'test', storage = window.sessionStorage;
try
{
storage.setItem(testKey, '1');
storage.re...
How to determine CPU and memory consumption from inside a process?
...information is available in /proc/stat, which is documented pretty well at http://www.linuxhowtos.org/System/procstat.htm; here is what it looks like on my 4-core box:
Anderson cxc # more /proc/stat
cpu 2329889 0 2364567 1063530460 9034 9463 96111 0
cpu0 572526 0 636532 265864398 2928 1621 6899 0...
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How do you find the last day of the month? [duplicate]
...gant approach I found in a useful DateTime extension library on CodePlex:
http://datetimeextensions.codeplex.com/
Here's some sample code:
public static DateTime First(this DateTime current)
{
DateTime first = current.AddDays(1 - current.Day);
return first;
}
publ...
How to count the number of set bits in a 32-bit integer?
...iently deal with any usage pattern or values you throw at it.
References:
https://graphics.stanford.edu/~seander/bithacks.html
https://en.wikipedia.org/wiki/Hamming_weight
http://gurmeet.net/puzzles/fast-bit-counting-routines/
http://aggregate.ee.engr.uky.edu/MAGIC/#Population%20Count%20(Ones%20Cou...