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MySQL - How to select data by string length
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502
You are looking for CHAR_LENGTH() to get the number of characters in a string.
For multi-byte...
JavaScript exponents
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answered Nov 18 '15 at 20:04
Salvador DaliSalvador Dali
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How to check if an int is a null
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An int is not null, it may be 0 if not initialized.
If you want an integer to be able to be null, you need to use Integer instead of int.
Integer id;
String name;
public Integer getId() { return id; }
Besides the statement if(person.equals(null)) can...
How do I get the directory that a program is running from?
...ytes = MIN(readlink("/proc/self/exe", pBuf, len), len - 1);
if(bytes >= 0)
pBuf[bytes] = '\0';
return bytes;
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Generating an MD5 checksum of a file
...fit the whole file in memory. In that case, you'll have to read chunks of 4096 bytes sequentially and feed them to the md5 method:
import hashlib
def md5(fname):
hash_md5 = hashlib.md5()
with open(fname, "rb") as f:
for chunk in iter(lambda: f.read(4096), b""):
hash_md5....
Can't resize UIView in IB
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edited Jul 6 '09 at 15:50
answered Jul 6 '09 at 15:44
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In which order should floats be added to get the most precise result?
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107
Your instinct is basically right, sorting in ascending order (of magnitude) usually improves th...
List of tuples to dictionary
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Boris
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answered Jun 29 '11 at 14:36
Sven MarnachSven Ma...
How to assign an exec result to a sql variable?
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100
I always use the return value to pass back error status. If you need to pass back one value I'...
C# Error: Parent does not contain a constructor that takes 0 arguments
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203
Since you don't explicitly invoke a parent constructor as part of your child class constructor,...