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Remove characters except digits from string using Python?
...digs)
'1233344554552'
>>>
string.maketrans makes a translation table (a string of length 256) which in this case is the same as ''.join(chr(x) for x in range(256)) (just faster to make;-). .translate applies the translation table (which here is irrelevant since all essentially means iden...
json_encode is returning NULL?
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few day ago I have the SAME problem with 1 table.
Firstly try:
echo json_encode($rows);
echo json_last_error(); // returns 5 ?
If last line returns 5, problem is with your data. I know, your tables are in UTF-8, but not entered data. For example the input was i...
Strings are objects in Java, so why don't we use 'new' to create them?
... yes, this optimization is possible because strings are immutable and therefore can be shared without problems. the shared "asdf" handling is an implementation of the 'Flyweight' design pattern.
– manuel aldana
Jan 6 '10 at 2:51
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setting multiple column using one update
How to set multiple columns of a table using update query in mysql?
2 Answers
2
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Using CSS :before and :after pseudo-elements with inline CSS?
...r(data-content); display: inline-block; width: 100%; }
</style>
<table><tr><td data-content="post"></td></tr></table>
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TINYTEXT, TEXT, MEDIUMTEXT, and LONGTEXT maximum storage sizes
...set-unicode-utf8.html, max 3 bytes for utf-8.
THIS IS A ROUGH ESTIMATION TABLE FOR QUICK DECISIONS!
So the worst case assumptions (3 bytes per utf-8 char) to best case (1 byte per utf-8 char)
Assuming the english language has an average of 4.5 letters per word
x is the number of bytes allocated
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SQLAlchemy default DateTime
...mport declarative_base
Base = declarative_base()
class Test(Base):
__tablename__ = 'test'
id = Column(Integer, primary_key=True)
created_date = Column(DateTime, default=datetime.datetime.utcnow)
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Is R's apply family more than syntactic sugar?
... This is a little off topic, but for this specific example, data.table is even faster and I think "easier". library(data.table) dt<-data.table(X,Y,Z,key=c("Y,Z")) system.time(dt[,list(X_mean=mean(X)),by=c("Y,Z")])
– dnlbrky
Feb 22 '13 at 4:01
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How to check if a process is running via a batch script
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Changing the tasklist format to CSV or anything but table is important because it tasklist default layout (table) truncates long image names which breaks the logic.
– Scott White
Jun 22 '11 at 14:56
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Can I force a page break in HTML printing?
I'm making a HTML report that is going to be printable, and it has "sections" that should start in a new page.
10 Answers
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