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How do I parse a string to a float or int?
In Python, how can I parse a numeric string like "545.2222" to its corresponding float value, 545.2222 ? Or parse the string "31" to an integer, 31 ?
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Looking for a clear definition of what a “tokenizer”, “parser” and...
I am looking for a clear definition of what a "tokenizer", "parser" and "lexer" are and how they are related to each other (e.g., does a parser use a tokenizer or vice versa)? I need to create a program will go through c/h source files to extract data declaration and definitions.
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Downcasting in Java
Upcasting is allowed in Java, however downcasting gives a compile error.
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Best way to simulate “group by” from bash?
Suppose you have a file that contains IP addresses, one address in each line:
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Make sure only a single instance of a program is running
Is there a Pythonic way to have only one instance of a program running?
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What is the best way to measure execution time of a function? [duplicate]
Obviously I can do and DateTime.Now.After - DateTime.Now.Before but there must be something more sophisticated.
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How does this milw0rm heap spraying exploit work?
I usually do not have difficulty to read JavaScript code but for this one I can’t figure out the logic. The code is from an exploit that has been published 4 days ago. You can find it at milw0rm .
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Purpose of memory alignment
Admittedly I don't get it. Say you have a memory with a memory word of length of 1 byte. Why can't you access a 4 byte long variable in a single memory access on an unaligned address(i.e. not divisible by 4), as it's the case with aligned addresses?
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Better way to check variable for null or empty string?
Since PHP is a dynamic language what's the best way of checking to see if a provided field is empty?
10 Answers
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Sqlite: CURRENT_TIMESTAMP is in GMT, not the timezone of the machine
I have a sqlite (v3) table with this column definition:
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