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How to read data when some numbers contain commas as thousand separator?
I have a csv file where some of the numerical values are expressed as strings with commas as thousand separator, e.g. "1,513" instead of 1513 . What is the simplest way to read the data into R?
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Regex to validate password strength
...:
^ Start anchor
(?=.*[A-Z].*[A-Z]) Ensure string has two uppercase letters.
(?=.*[!@#$&*]) Ensure string has one special case letter.
(?=.*[0-9].*[0-9]) Ensure string has two digits.
(?=.*[a-z].*[a-z].*[a-z]) Ensure string has three lowercase le...
How to send SMS in Java
...lPortEventListener,
CommPortOwnershipListener {
private static String comPort = "COM6"; // This COM Port must be connect with GSM Modem or your mobile phone
private String messageString = "";
private CommPortIdentifier portId = null;
private Enumeration portList;
priv...
PHP json_decode() returns NULL with valid JSON?
...ked for me
json_decode( preg_replace('/[\x00-\x1F\x80-\xFF]/', '', $json_string), true );
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What character encoding should I use for a HTTP header?
...er *TEXT or combinations
of token, separators, and quoted-string>
OCTET = <any 8-bit sequence of data>
TEXT = <any OCTET except CTLs,
but including LWS>
CTL = <any US-ASCII control character
(octets 0 ...
Is the size of C “int” 2 bytes or 4 bytes?
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"16 bits. In that case, int, is 2 bytes" can be wrong, if CHAR_BIT is 16, sizeof(int) can be 1 byte (or char).
– 12431234123412341234123
Mar 3 '17 at 14:55
6
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Is an array name a pointer?
...y has, you must either use a sentinel value (such as the 0 terminator in C strings) or you must pass the number of elements as a separate parameter.
Which *may* affect how the address value is interpreted - depends on the machine.
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Clearing intent
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doesn't the removeExtra() method take a String parameter ? like this getIntent().removeExtra("String");
– tony9099
Oct 17 '13 at 9:16
25
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Alternative to itoa() for converting integer to string C++? [duplicate]
...ing if there was an alternative to itoa() for converting an integer to a string because when I run it in visual Studio I get warnings, and when I try to build my program under Linux, I get a compilation error.
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Convert text into number in MySQL query
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This should work:
SELECT field,CONVERT(SUBSTRING_INDEX(field,'-',-1),UNSIGNED INTEGER) AS num
FROM table
ORDER BY num;
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