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Generating a SHA-256 hash from the Linux command line
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On OSX, it might be handy to create an alias: alias sha256sum='shasum --algorithm 256'
– Jonathan Cross
Jun 4 '16 at 13:21
1
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How do I convert a string to a number in PHP?
...mstances. For situations where you do want to explicitly convert the type, cast it:
$num = "3.14";
$int = (int)$num;
$float = (float)$num;
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Regular expression for a hexadecimal number?
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@NiklasB. Your shorthand is only valid if using perl regex, if using POSIX regex, then Steven's solution is the shortest. Either way, Steven's solution works for both perl and POSIX regex.
– David M. Syzdek
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How can I convert a long to int in Java?
...ted, in Java 8:
Math.toIntExact(value);
Original Answer:
Simple type casting should do it:
long l = 100000;
int i = (int) l;
Note, however, that large numbers (usually larger than 2147483647 and smaller than -2147483648) will lose some of the bits and would be represented incorrectly.
For ...
How do I make the method return type generic?
...nimal> T callFriend(String name, Class<T> type) {
return type.cast(friends.get(name));
}
Then call it as such:
jerry.callFriend("spike", Dog.class).bark();
jerry.callFriend("quacker", Duck.class).quack();
This code has the benefit of not generating any compiler warnings. Of course ...
How can I output the value of an enum class in C++11
...ts integer value. You need to explicitly convert it to an integer using a cast:
std::cout << static_cast<std::underlying_type<A>::type>(a) << std::endl;
You may want to encapsulate the logic into a function template:
template <typename Enumeration>
auto as_integer(...
How can I convert a std::string to int?
...stinguish between bad input (see here).
4. Fourth option: Boost's lexical_cast
#include <boost/lexical_cast.hpp>
#include <string>
std::string str;
try {
int i = boost::lexical_cast<int>( str.c_str());
float f = boost::lexical_cas...
How to prevent caching of my Javascript file? [duplicate]
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Add a random query string to the src
You could either do this manually by incrementing the querystring each time you make a change:
<script src="test.js?version=1"></script>
Or if you are using a server side language...
Performance surprise with “as” and nullable types
...d is of the expected type, takes but a few machine code instructions. The cast is also easy, the JIT compiler knows the location of the value bits in the object and uses them directly. No copying or conversion occurs, all machine code is inline and takes but about a dozen instructions. This neede...
国际 C 语言混乱代码大赛结果 - 创意 - 清泛网 - 专注C/C++及内核技术
...gle 的 Don Yang 又拿奖了。侯启明这次是写了一个无整数的 MD5 程序，Don Yang 写了一个有海星图案的文本编码器。侯应该是第 4 回获奖了，Don Yang 应是第 7 回。
虽然主办方目前还没有公布这次比赛的源码，但可以围观他俩之前的作...