大约有 44,000 项符合查询结果（耗时：0.0340秒） [XML]
Grep only the first match and stop
..., --text, process a binary file as if it were text
-m 1, --max-count, stop reading a file after 1 matching line
-h, --no-filename, suppress the prefixing of file names on output
-r, --recursive, read all files under a directory recursively
...
Select random lines from a file
... 0.01s system 80% cpu 0.047 total
The reason it is so fast, well I don't read the whole file and just move the file pointer 10 times and print the line after the pointer.
Gitlab Repo
Old attempt
First I needed a file of 78.000.000.000 lines:
seq 1 78 | xargs -n 1 -P 16 -I% seq 1 1000 | xargs -n 1 ...
Any way to make a WPF textblock selectable?
...
Use a TextBox with these settings instead to make it read only and to look like a TextBlock control.
<TextBox Background="Transparent"
BorderThickness="0"
Text="{Binding Text, Mode=OneWay}"
IsReadOnly="True"
TextWrapping="Wrap" />
...
How to convert an array of strings to an array of floats in numpy?
...
Well, if you're reading the data in as a list, just do np.array(map(float, list_of_strings)) (or equivalently, use a list comprehension). (In Python 3, you'll need to call list on the map return value if you use map, since map returns an ite...
How to check if a query string value is present via JavaScript?
..., but your code is really sloppy. Where are you curly braces? You should read "The Good Parts" where code written a style without curly braces has been proven to fail under certain conditions and produces confusion during maintenance.
– austin cheney
Aug 22 '...
What are “sugar”, “desugar” terms in context of Java 8?
...ditions, mostly shortcuts, that make some constructs easier to type and to read (the latter being, in practice, the most important during the life cycle of your program).
Wikipedia has a definition of syntactic sugar but you should note that not all sugar is, in essence, syntactical (not all recent...
Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of
I have read where many people were able to solve this by:
29 Answers
29
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List all svn:externals recursively?
...ion for $wcdir"
echo "$1: $wcver"
svn propget svn:externals -R | while read a b c d e; do
[ -n "$a" ] || continue
if [ "$b" = "-" ]; then
wcparent="$a"
wcdir="$wcparent/$c"
[ -z "$e" ] || panic "Invalid format #1"
else
[ -n "$wcparent" ] || panic "Invalid form...
What are the effects of exceptions on performance in Java?
...jmp. That means all registers of the CPU are written to the stack (which already takes some time) and possibly some other data needs to be created... all this already happens in the try statement. The throw statement needs to unwind the stack and restore the values of all registers (and possible oth...
abort: no username supplied (see “hg help config”)
...
On Windows, these configuration files are read:
- "<repo>\.hg\hgrc"
- "%USERPROFILE%\.hgrc"
- "%USERPROFILE%\Mercurial.ini"
- "%HOME%\.hgrc"
- "%HOME%\Mercurial.ini"
- "C:\Mercurial\Mercurial.ini"
- "HKEY_LOCAL_MACHINE\SOFTWARE\Mercurial"
- "<install-dir>...