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Clearing a string buffer/builder after loop

...t of creating the SB outside is not losing the internal (potentially long) char[] of it. If in the first iterator it grew up enough, the second loop will not need to resize any char[]. But for getting the advantage the "clear method" will have to preserve the size of the internal array. setLength do...
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Hiding user input on terminal in Linux script

... ss64.com/bash/read.html Silent mode. If input is coming from a terminal, characters are not echoed. – Andreas Wong Oct 7 '15 at 3:45 ...
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How to add anything in through jquery/javascript?

... You can use innerHTML to just concat the extra field string; document.head.innerHTML = document.head.innerHTML + '<link rel="stylesheet>...' However, you can't guarantee that the extra things you add to the head will be recognised by the browser ...
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How to allocate aligned memory only using the standard library?

... Original answer { void *mem = malloc(1024+16); void *ptr = ((char *)mem+16) & ~ 0x0F; memset_16aligned(ptr, 0, 1024); free(mem); } Fixed answer { void *mem = malloc(1024+15); void *ptr = ((uintptr_t)mem+15) & ~ (uintptr_t)0x0F; memset_16aligned(ptr, 0, 10...
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How much is the overhead of smart pointers compared to normal pointers in C++?

...ude <thread> uint32_t n = 100000000; void t_m(void){ auto a = (char*) malloc(n*sizeof(char)); for(uint32_t i=0; i<n; i++) a[i] = 'A'; } void t_u(void){ auto a = std::unique_ptr<char[]>(new char[n]); for(uint32_t i=0; i<n; i++) a[i] = 'A'; } void t_u2(void){ a...
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Code Golf - π day

... In dc: 88 and 93 93 94 96 102 105 129 138 141 chars Just in case, I am using OpenBSD and some supposedly non-portable extensions at this point. 93 chars. This is based on same formula as FORTRAN solution (slightly different results than test cases). Calculates X^2=R^2-...
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How to convert wstring into string?

...= L"ħëłlö"; const std::locale locale(""); typedef std::codecvt<wchar_t, char, std::mbstate_t> converter_type; const converter_type& converter = std::use_facet<converter_type>(locale); std::vector<char> to(ws.length() * converter.max_length()); std::mbstate_t state...
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How can query string parameters be forwarded through a proxy_pass with nginx?

... token is ""(empty str) for original request without args,because $is_args concat any var will be `?` if ($is_args) { # if the request has args update token to "&" set $token "&"; } location /test { set $args "${args}${token}k1=v1&k2=v2"; # update original append custom params ...
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Stripping everything but alphanumeric chars from a string in Python

What is the best way to strip all non alphanumeric characters from a string, using Python? 11 Answers ...
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Is there a template engine for Node.js? [closed]

...u might as well not use a template engine at all and just some functions / concats – tjholowaychuk Jan 28 '11 at 20:10 add a comment  |  ...