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How can I randomize the lines in a file using standard tools on Red Hat Linux?
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I'm usually a Perl fan, but came across this ruby example which has the benefit of being shorter: ruby -e 'puts STDIN.readlines.shuffle'. It would need testing on big inputs to see if the speed is comparable. (also works on OS X)
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What is a CSRF token ? What is its importance and how does it work?
...application doesn’t distinguish
between POST and GET requests (e.g. in PHP by using $_REQUEST instead
of $_POST). Don’t do that! Data altering requests could be submitted
as easy as <img src="http://a.com/tweet?tweet=This+is+really+bad">,
embedded in a malicious website or even an ...
Why does !{}[true] evaluate to true in JavaScript?
...eloper tools does the following:
try {
if (injectCommandLineAPI && inspectedWindow.console) {
inspectedWindow.console._commandLineAPI = new CommandLineAPI(this._commandLineAPIImpl, isEvalOnCallFrame ? object : null);
expression = "with ((window && window...
How to check permissions of a specific directory?
...l about the "ls" ( List " command.
Also, using ls -la myFile will list & show all the facts about that file.
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How to get the number of characters in a std::string?
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Your examples just use ASCII. Would you mind updating it for Unicode characters as well? Especially the 32 bit ones such as ????
– Thomas Weller
May 17 '18 at 9:50
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Add UIPickerView & a Button in Action sheet - How?
...r:navigationController animated:YES completion:nil];
I create a simple example and posted it on github.
Also see Showing actionsheet causes CGContext invalid context errors.
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PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
...what about performance? And what about the code of my application (will be php and python)? so many schemas..
– Strae
Jul 20 '09 at 15:22
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Trimming a huge (3.5 GB) csv file to read into R
... expert at this, but you might consider trying MapReduce, which would basically mean taking a "divide and conquer" approach. R has several options for this, including:
mapReduce (pure R)
RHIPE (which uses Hadoop); see example 6.2.2 in the documentation for an example of subsetting files
Alterna...
Troubleshooting “The use statement with non-compound name … has no effect”
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PHP's use isn't the same as C++'s using namespace; it allows you to define an alias, not to "import" a namespace and thus henceforth omit the namespace qualifier altogether.
So, you could do:
use Blog\Article as BA;
... t...
Is there a MySQL command to convert a string to lowercase?
...case. Is there an easy command to do this, either using MySQL or MySQL and PHP?
9 Answers
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