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Are table names in MySQL case sensitive?
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Format numbers to strings in Python
...formatting:
"%d:%d:d" % (hours, minutes, seconds)
See here, especially: https://web.archive.org/web/20120415173443/http://diveintopython3.ep.io/strings.html
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How does a public key verify a signature?
I am trying to get a better grapple on how public/private keys work. I understand that a sender may add a digital signature to a document using his/her private key to essentially obtain a hash of the document, but what I do not understand is how the public key can be used to verify that signature.
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Get Character value from KeyCode in JavaScript… then trim
...{
font-family: courier, serif;
font-size: 1.2em;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<input id="in" placeholder="Type here..." />
<button id="reset">Reset</button>
<br/>
<br/>
<div id="k...
Generic deep diff between two objects
...h you can use for finding diff between two JavaScript objects:
Github URL:
https://github.com/cosmicanant/recursive-diff
Npmjs url: https://www.npmjs.com/package/recursive-diff
You can use recursive-diff library in browser as well as Node.js. For browser, do the following:
<script type="text" src...
Java regex email
...
FWIW, here is the Java code we use to validate email addresses. The Regexp's are very similar:
public static final Pattern VALID_EMAIL_ADDRESS_REGEX =
Pattern.compile("^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,6}$", Pattern.CASE_INSENSITIVE);
public static boolean validate(String emailStr) {
...
通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...缺的，对于开启文件描述符的数量，分配堆栈的大小，CPU 时间，虚拟内存大小，等等，都有非常严格的要求。资源的合理限制和分配，不仅仅是保证系统可用性的必要条件，也与系统上软件运行的性能有着密不可分的联系。这...
Best way to use PHP to encrypt and decrypt passwords? [duplicate]
...the code as provided is vulnerable to padding oracle attacks.
See also:
https://stackoverflow.com/a/30189841/2224584
https://stackoverflow.com/a/30166085/2224584
https://stackoverflow.com/a/30159120/2224584
Also, don't just use a "password" for an encryption key. Encryption keys are random stri...
How do I determine the target architecture of static library (.a) on Mac OS X?
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How to convert a String into an ArrayList?
...s very useful extension, by the way, which will work on any CharSequence: https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html#splitAsStream-java.lang.CharSequence-. Since you don't need the array at all, avoid creating it thus:
// This will presumably be a static final field so...