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How to change a string into uppercase
I have problem in changing a string into uppercase with Python. In my research, I got string.ascii_uppercase but it doesn't work.
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How to get rid of punctuation using NLTK tokenizer?
...need NLTK to remove punctuation. You can remove it with simple python. For strings:
import string
s = '... some string with punctuation ...'
s = s.translate(None, string.punctuation)
Or for unicode:
import string
translate_table = dict((ord(char), None) for char in string.punctuation)
s.trans...
lua和c/c++互相调用实例分析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...;
void (lua_pushinteger) (lua_State *L, lua_Integer n);
void (lua_pushlstring) (lua_State *L, const char *s, size_t l);
void (lua_pushstring) (lua_State *L, const char *s);
void (lua_pushboolean) (lua_State *L, int b);
void (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n);
数...
How do I escape a single quote in SQL Server?
...ative is using double quote characters, instead of single ones, around the string. I.e.,
insert into my_table values("hi, my name's tim.");
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How to remove first 10 characters from a string?
How to ignore the first 10 characters of a string?
12 Answers
12
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Are there disadvantages to using a generic varchar(255) for all text-based fields?
... (If you're wondering, it's this way because Ruby on Rails migrations map String fields to VARCHAR(255) by default and I never bothered to override it).
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Group query results by month and year in postgresql
...ht make sense to use date_trunc, but in some cases having a formatted date string is preferable, and if you're using a performant data warehouse the additional computation might not be a deal breaker. For example, if you are running a quick analytics report using redshift, and it usually takes 3 sec...
Please explain the exec() function and its family
... family have different behaviours:
l : arguments are passed as a list of strings to the main()
v : arguments are passed as an array of strings to the main()
p : path/s to search for the new running program
e : the environment can be specified by the caller
You can mix them, therefore you have:
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Equals(=) vs. LIKE
... these operators!
= is a comparison operator that operates on numbers and strings. When comparing strings, the comparison operator compares whole strings.
LIKE is a string operator that compares character by character.
To complicate matters, both operators use a collation which can have important...
Is there an auto increment in sqlite?
...ect (bold & italic are mine):
The AUTOINCREMENT keyword imposes extra CPU, memory, disk space, and
disk I/O overhead and should be avoided if not strictly needed. It is
usually not needed.
In SQLite, a column with type INTEGER PRIMARY KEY is an alias for the
ROWID (except in WITHO...