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Set type for function parameters?
...read the entire code, and the entire code of the caller and of its caller, etc. Blessing? you certainly must be jesting.
– Toskan
Mar 29 '16 at 20:21
14
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When should I make explicit use of the `this` pointer?
...one (and should be done) when overloading operator+, operator-, operator=, etc:
class Foo
{
Foo& operator=(const Foo& rhs)
{
return * this;
}
};
Doing this permits an idiom known as "method chaining", where you perform several operations on an object in one line of code. Such a...
How to Empty Caches and Clean All Targets Xcode 4 and later
...wing command in the Terminal to delete in a more targeted way:
rm -rf "$(getconf DARWIN_USER_CACHE_DIR)/org.llvm.clang/ModuleCache"
EDIT: For certain Swift-related problems I have found it useful to delete ~/Library/Caches/com.apple.dt.Xcode. You lose a lot when you do this, like your spare copie...
How to escape text for regular expression in Java
...tern.quote replaces special characters in regex search strings, like .|+() etc, and Matcher.quoteReplacement replaces special characters in replacement strings, like \1 for backreferences.
– Steven
Nov 18 '11 at 18:12
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What is the best java image processing library/approach? [closed]
...sizing (and simple ops like padding, cropping, rotating, brighten/dimming, etc.) library that is painfully simple to use - a single class consists of a set of simple graphics operations all defined as static methods that you pass an image and get back a result.
The most basic example of using the l...
Changing .gitconfig location on Windows
...on that worked easiest for me was to just go to C:\Program Files (x86)\Git\etc and open profile in a text editor.
There's an if statement on line 37 # Set up USER's home directory. I took out the if statement and put in the local directory that I wanted the gitconfig to be, then I just copied my ex...
convert_tz returns null
...cat /tmp/zut.sql >> /tmp/mysql_tzinfo_to.sql
mysql --defaults-file=/etc/mysql/my.cnf --user=verifiedscratch -p mysql < /tmp/mysql_tzinfo_to.sql
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Add floating point value to android resources/values
...= resource type (referenced with R.XXXXX.name):
color
dimen
string
style
etc...
To fetch resource from code, you should use this snippet:
TypedValue outValue = new TypedValue();
getResources().getValue(R.dimen.text_line_spacing, outValue, true);
float value = outValue.getFloat();
I know tha...
Filter dataframe rows if value in column is in a set list of values [duplicate]
... isin only works for perfect matched, it accepts dataframes, Series, Index etc.. @jakevdp provided a great solution here, which works to extract the matching values of df1, given another dataframe df2:stackoverflow.com/a/33282617/4752883. In my case, I have a df2, but the values in df2 wont be exact...
How do I copy a file in Python?
...━━━━━━━━━━━
Example:
import shutil
shutil.copy('/etc/hostname', '/var/tmp/testhostname')
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