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Python - write() versus writelines() and concatenated strings
...ites every item.
Edit: Another point you should be aware of:
write() and readlines() existed before writelines() was introduced. writelines() was introduced later as a counterpart of readlines(), so that one could easily write the file content that was just read via readlines():
outfile.writeline...
Convert number strings with commas in pandas DataFrame to float
...
If you're reading in from csv then you can use the thousands arg:
df.read_csv('foo.tsv', sep='\t', thousands=',')
This method is likely to be more efficient than performing the operation as a separate step.
You need to set the lo...
Why does npm install say I have unmet dependencies?
...imilar problem with the error /usr/local/lib/node_modules/npm/node_modules/read-installed/node_modules/readdir-scoped-modules requires graceful-fs@'^4.1.2'
– wuliwong
Jul 6 '16 at 22:39
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Populate data table from data reader
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You can load a DataTable directly from a data reader using the Load() method that accepts an IDataReader.
var dataReader = cmd.ExecuteReader();
var dataTable = new DataTable();
dataTable.Load(dataReader);
...
Does opacity:0 have exactly the same effect as visibility:hidden
...lement.)
According to philnash's answer, elements with opacity:0 are still read by screen readers, while visible:hidden elements are not.
According to Chris Noe's answer, visibility has more options (such as collapse) and elements that are not visible no longer respond to clicks and cannot be tabbed...
How can I inject a property value into a Spring Bean which was configured using annotations?
...="org.springframework.beans.factory.config.PropertiesFactoryBean"> then read values from that into another bean using something like @Value("#{appProperties.databaseName}")
– Dónal
Apr 6 '11 at 20:50
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How can I convert an image into a Base64 string?
...m using any I/O API
byte[] bytes;
byte[] buffer = new byte[8192];
int bytesRead;
ByteArrayOutputStream output = new ByteArrayOutputStream();
try {
while ((bytesRead = inputStream.read(buffer)) != -1) {
output.write(buffer, 0, bytesRead);
}
}
catch (IOException e) {
e.printStackT...
Difference between clustered and nonclustered index [duplicate]
...ce it is being stored in the same order as the clustered index itself. So, reading from a clustered index is generally faster than reading from a non-clustered index.
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What is attr_accessor in Ruby?
...e # => nil
person.name = "Dennis" # => no method error
Aha, we can read the name, but that doesn't mean we can assign the name. Those are two different methods. The former is called reader and latter is called writer. We didn't create the writer yet so let's do that.
class Person
def name...
iPhone Navigation Bar Title text color
...t doesn't cause the text to blend into shadow, which would be difficult to read.
I worked this out through trial and error, but the values I came up with are ultimately too simple for them not to be what Apple picked. :)
If you want to verify this, drop this code into initWithNibName:bundle: in Pa...