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Escaping a forward slash in a regular expression
...mple (using an alternate delimiter that could become m{/[^/]+$}, which may read more clearly). Escaping the slash with a backslash is common enough to have earned a name and a wikipedia page: Leaning Toothpick Syndrome. In regular expressions where there's just a single instance, escaping a slash ...
How to wait for a keypress in R?
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As someone already wrote in a comment, you don't have to use the cat before readline(). Simply write:
readline(prompt="Press [enter] to continue")
If you don't want to assign it to a variable and don't want a return printed in the cons...
iOS 7: UITableView shows under status bar
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Reading self.topLayoutGuide.length from viewDidLayoutSubviews will screw up the layout of child views.
– user246672
Aug 6 '14 at 20:08
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Why can't I use float value as a template parameter?
...doesn't allow floating points as non-type template-arguments, which can be read about in the following section of the C++11 standard;
14.3.2/1 Template non-type arguments [temp.arg.nontype]
A template-argument for a non-type, non-template template-parameter
shall be one of:
for a...
OSGi: What are the differences between Apache Felix and Apache Karaf?
...ionality other than a basic console, file loading so that you can actually read configuration files, etc. The latest zip file of it is 19.1 MB. Yeah. Small. It can easily run on small devices and work in embedded.
What you may be thinking of is something more like ServiceMix which uses Karaf as ...
H2 in-memory database. Table not found
...va CreateTable
C:\Users\Luke\stuff>java InsertIntoTable
Exception in thread "main" org.h2.jdbc.JdbcSQLException: Table "PERSON" not found; SQL statement:
INSERT INTO PERSON (ID, FIRSTNAME, LASTNAME) VALUES (1, 'John', 'Doe') [42102-154]
at org.h2.message.DbException.getJdbcSQLException(D...
PHP - Merging two arrays into one array (also Remove Duplicates)
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As already mentioned, array_unique() could be used, but only when dealing with simple data. The objects are not so simple to handle.
When php tries to merge the arrays, it tries to compare the values of the array members. If a me...
How do I get a UTC Timestamp in JavaScript?
... which can confuse people who attack dates in js with trial and error than reading the spec. Using something like iso8601.js solves this varying behaviour by defining a single implementation of the Date object.
By default, the spec says you can create dates with an extended ISO 8601 date format lik...
“Insert if not exists” statement in SQLite
...CT 1 FROM memos WHERE id = 5 AND text = 'text to insert');
If a record already contains a row where text is equal to 'text to insert' and id is equal to 5, then the insert operation will be ignored.
I don't know if this will work for your particular query, but perhaps it give you a hint on how to...
How to articulate the difference between asynchronous and parallel programming?
...get this. The parallel tasks of rendering the different frames should be spread out across multiple CPUs/cores. That has nothing to do with the timing of the task completion, or whether that task blocks something else. It just means a bunch of CPUs will do it together and make the result available a...