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Only read selected columns

...t 7 columns are "integer" and we set the remaining 6 columns to "NULL" indicating they should be skipped > read.table("data.txt", colClasses = c(rep("integer", 7), rep("NULL", 6)), + header = TRUE) Year Jan Feb Mar Apr May Jun 1 2009 -41 -27 -25 -31 -31 -39 2 2010 -41 -27 -25 -31 -...
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How do you make sure email you send programmatically is not automatically marked as spam?

... brandonchecketts.com/emailtest.php you can test if your mail server setup conforms to DomainKeys, DKIM, SPF and other anti-spam methods. – Jonas Jun 9 '10 at 7:02 ...
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What does the tilde (~) mean in my composer.json file?

...swered Sep 24 '13 at 11:29 AlterPHPAlterPHP 12k44 gold badges4444 silver badges5050 bronze badges ...
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How to view the assembly behind the code using Visual C++?

...is go to project settings -> C/C++ -> Output Files -> ASM List Location and fill in file name. Also select "Assembly Output" to "Assembly With Source Code". Compile the program and use any third-party debugger. You can use OllyDbg or WinDbg for this. Also you can use IDA (interactive disas...
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Why am I not getting a java.util.ConcurrentModificationException in this example?

...r's own remove or add methods, the iterator will throw a ConcurrentModificationException. This check is done in the next() method of the iterator (as you can see by the stacktrace). But we will reach the next() method only if hasNext() delivered true, which is what is called by the for each to c...
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Cookie blocked/not saved in IFRAME in Internet Explorer

...ely nothing. In short - to keep IE happy - add the following line to your PHP code (Other languages should look similar) header('P3P: CP="Potato"'); Problem solved, and IE is happy with this potato. share | ...
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Split code over multiple lines in an R script

...dering if there was a character that I could put at the end of line to indicate to R that the code continues on the next line. Such as "\" in Python. However, your solution works well for the specific problem of string continuation. – Curious2learn Jun 13 '11 a...
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What special characters must be escaped in regular expressions?

...x Flavors (PCRE) Includes C, C++, Delphi, EditPad, Java, JavaScript, Perl, PHP (preg), PostgreSQL, PowerGREP, PowerShell, Python, REALbasic, Real Studio, Ruby, TCL, VB.Net, VBScript, wxWidgets, XML Schema, Xojo, XRegExp.PCRE compatibility may vary     Anywhere: . ^ $ * + - ? ( ) [ ] { } \ | Leg...
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Difference between the Apache HTTP Server and Apache Tomcat? [closed]

...r. A servlet, at the end, is a Java class. JSP files (which are similar to PHP, and older ASP files) are generated into Java code (HttpServlet), which is then compiled to .class files by the server and executed by the Java virtual machine. ...
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Fastest way to reset every value of std::vector to 0

... answered Jan 13 '12 at 9:49 Cat Plus PlusCat Plus Plus 108k2424 gold badges181181 silver badges212212 bronze badges ...