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Efficient way to determine number of digits in an integer

...zation optimization for 32-bit numbers template<> int numDigits(int32_t x) { if (x == MIN_INT) return 10 + 1; if (x < 0) return numDigits(-x) + 1; if (x >= 10000) { if (x >= 10000000) { if (x >= 100000000) { if (x >= 1000000000) ...
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Picking a random element from a set

...See [boost's docs][1] for a little more in this. [1] boost.org/doc/libs/1_43_0/doc/html/unordered/buckets.html – Aaron McDaid Jul 20 '10 at 13:50 ...
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CentOS 6.4下Squid代理服务器的安装与配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...作系统:CentOS release 6.4 (Final) Squid版本:squid-3.1.10-20.el6_5.3.x86_64 SELINUX=disabled HTTP Service: stoped 三、安装Squid服务 3.1 检查squid软件是否安装 # rpm -qa|grep squid 3.2 如果未安装,则使用yum 方式安装 # yum -y install squid 3.3 设置开机...
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How can I use a DLL file from Python?

...ed function call. # HLLAPI hllApiProto = ctypes.WINFUNCTYPE ( ctypes.c_int, # Return type. ctypes.c_void_p, # Parameters 1 ... ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p) # ... thru 4. hllApiParams = (1, "p1", 0), (1, "p2", 0), (1, "p3",0), (1, "p4",0), # Actual...
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android get all contacts

...tentResolver(); Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null); if ((cur != null ? cur.getCount() : 0) > 0) { while (cur != null && cur.moveToNext()) { String id = cur.getString( cur.getColu...
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How do I access call log for android?

...owing permission: <uses-permission android:name="android.permission.READ_CALL_LOG" /> Code: Uri allCalls = Uri.parse("content://call_log/calls"); Cursor c = managedQuery(allCalls, null, null, null, null); String num= c.getString(c.getColumnIndex(CallLog.Calls.NUMBER));// for number Strin...
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Doctrine - How to print out the real sql, not just the prepared statement?

...ries I use sudo vim /etc/mysql/my.cnf and add those 2 lines: general_log = on general_log_file = /tmp/mysql.log and restart mysql share | improve this answer | follo...
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Catch Ctrl-C in C

... that is also working under asynchronous interrupts: I would either use sig_atomic_t or atomic_bool types there. I just missed that one. Now, since we are talking: would you like me to rollback my latest edit? No hard feelings there it would be perfectly understandable from your point of view :) ...
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How to capture no file for fs.readFileSync()?

... good code practices here! const content = await readFileAsync(path.join(__dirname, filePath), { encoding: 'utf8' }) return content; } Later can use this async function with try/catch from any other function: const anyOtherFun = async () => { try { const fileContent = await rea...
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Error 908: Permission Receive SMS - #5 by Taifun - MIT App Inventor Help - MIT App Inventor Community

... } #d-splash { display: none; } const DELAY_TARGET=2e3,POLLING_INTERVAL=50,splashSvgTemplate=document.querySelector(".splash-svg-template"),splashTemplateClone=splashSvgTemplate.content.cloneNode(!0),svgElement=splashTemplateClone.querySelector("svg"),svgString=(new X...