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Grep characters before and after match?
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grep -E -o ".{0,5}test_pattern.{0,5}" test.txt
This will match up to 5 characters before and after your pattern. The -o switch tells grep to only show the match and -E to use an extended regular expression. Make sure to put the quotes aroun...
The executable gets signed with invalid entitlements in Xcode
... Turned out the Development Team was different in ProjectTarget and ProjectTests.
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unsigned APK can not be installed
I am trying to distribute my application to some people for testing.
I have installed it on my Desire directly from eclipse and it works fine.
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How to escape @ characters in Subversion managed file names?
...ws you to target a specific revision of that file. For example, "svn info test.txt@1234" will give information about test.txt as it existed in revision 1234.
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Comparison of full text search engine - Lucene, Sphinx, Postgresql, MySQL?
...QL and index that table and it's entries.
1.Table Structure
CREATE TABLE test_solr_mysql
(
id INT UNSIGNED NOT NULL AUTO_INCREMENT,
name VARCHAR(45) NULL,
created TIMESTAMP NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (id)
);
2.Populate the above table
INSERT INTO `test_solr_mysql` (`n...
Listing only directories using ls in Bash?
... NB. 3 was noticeably slower than the others for me. In the directory I tested: 1 .012s, 2 .016s, 3 .055s, 4 .021s.
– isomorphismes
Jul 30 '13 at 1:35
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brew install mysql on macOS
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Note the second: a commenter says step 2 is not required. I don't want to test it, so YMMV!
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Java 8: Lambda-Streams, Filter by Method with Exception
...er examples on how to use it (after statically importing UtilException):
@Test
public void test_Consumer_with_checked_exceptions() throws IllegalAccessException {
Stream.of("java.lang.Object", "java.lang.Integer", "java.lang.String")
.forEach(rethrowConsumer(className -> System.out...
Why can't R's ifelse statements return vectors?
...ion for ifelse states:
ifelse returns a value with the same
shape as test which is filled with
elements selected from either yes or
no depending on whether the element
of test is TRUE or FALSE.
Since you are passing test values of length 1, you are getting results of length 1. If you p...
How to validate an email address in JavaScript
...Using regular expressions is probably the best way. You can see a bunch of tests here (taken from chromium)
function validateEmail(email) {
const re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]...