main.html #include <windows.h> #include <stdio.h> #include <stdlib.h> HMENU hMenu ; LRESULT CALLBACK WndProc ( HWND ,
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main.html #include <windows.h> #include <stdio.h> #include <stdlib.h> HMENU hMenu ; LRESULT CALLBACK WndProc ( HWND ,

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Git 裡面禁用的函式...
Git 裡面禁用的函式…
在 Hacker News Daily 上看到 Git 裡面禁用的函式 (透過 .h 在編譯階段就擋下來):「https://github.com/git/git/blob/master/banned.h」,在開頭有說明原因:
/* * This header lists functions that have been banned from our code base, * because they're too easy to misuse (and even if used correctly, * complicate audits). Including this header turns them into compile-time * errors. */
就算用的正確也增加了稽核的難度… 這些被禁用的函式包括了:
strcpy()
strcat()
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Arduino でsprintf
LCDなんかに出力したい時、数字の先頭をゼロで埋めたい事ってありますよね。
sprintfというコマンドが有るらしいのは判ったけど、具体的な記述方法がいまいち、初心者の私には理解できなくて悪戦苦闘した結果、やっと具体例ができました。
参考にしたページ↓
http://www.phpbook.jp/func/string/index7.html
http://www9.plala.or.jp/sgwr-t/lib/sprintf.html
【具体例】
/* Fill 0(zero) Fix Format */
char str[100]; //String area
void setup() { Serial.begin(9600); }
void loop() { for (int i = 0; i < 0xff;i++){ sprintf(str,"> %04X", i ); //str <- 0000 -00FF Serial.print(i); Serial.println(str); delay (500); } }
これが重要
sprintf(str,"> %04X", i );
i (整数)をフォーマット (%04X) に従って文字列 (str) に入れる。
フォーマットは上記リンクに詳しく解説されています。
この例だと
"> “ の後ろに 4桁固定で大文字16進で出力されます。
結果がこれ
苦節2日、ふう〜
#sprintf & my word-machine is taking part in #berlinfoodartweek 2017\(^o^)/ and i cooked some food waste dip with @hallescheshaus @photo_joe @istgerman @zmirza and alexis - cooking team! everything was so yummy!! you can eat "against meat" lunch on sat & sun! i will make veggie boat. 🥗🚤 pls come😘 #foodartweek #foodartweek2017🍔#rokuberlin #vegan #foodwaste #yumfromtrash (Hallesches Haus)
Mi recomendación
Personalmente soy partidario de usar printf(), y sprintf() para todo lo referente a datos obtenidos de fuentes externas, ya sea un XML, una base de datos, otras webs,… así estaremos controlando lo único que es fácilmente alterable. Y para datos fijos, etiquetas, estructura,… usaremos echo() que aliviarán una pizca nuestro servidor.
Ampliando la seguridad
Además del uso de sprintf() y printf() tenemos a nuestra disponsición mysql_real_escape_string(), que se encarga de permitirnos validar esos parámetros sensibles de nuestros scripts. Veamos un ejemplo de como implementarlo.
$sql = sprintf("SELECT nombre FROM tabla WHERE id = %d;",mysql_real_escape_string($numero)); mysql_query($sql);

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sprintf in JavaScript
JavaScript does not offer an native support of the sprintf() function, this is a basic script to implement sprintf() function, put it in your commons functions script file:
var sprintf = function sprintf(text) { var args = Array.prototype.slice.call(arguments), i = 1; return text.replace(/%s/g, function() { return (i < args.length) ? args[i++] : ""; }); }
Example
In this example we can use the sprintf() function to render an HTML anchor:
var format = sprintf("<a href=\"%s\">%s</a>", "http://www.google.com/", "Google website"); console.log(format); // <a href="http://www.google.com/">Google website</a>
Note
This implementation is just for parsing strings arguments %s, if you want an advanced support like parsing integers %d and others use this JavaScript plugin.
console.log()
log, info, warn and error functions of the console object supports formatted string:
console.log("<a href=\"%s\">%s %d</a>", "http://www.google.com/", "Google website", 2013); console.info("<a href=\"%s\">%s %d</a>", "http://www.google.com/", "Google website", 2013); console.warn("<a href=\"%s\">%s %d</a>", "http://www.google.com/", "Google website", 2013); console.error("<a href=\"%s\">%s %d</a>", "http://www.google.com/", "Google website", 2013);