大约有 47,000 项符合查询结果（耗时：0.0836秒） [XML]
Grep regex NOT containing string
I am passing a list of regex patterns to grep to check against a syslog file. They are usually matching an IP address and log entry;
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When to create a new app (with startapp) in Django?
...ew applications for each logically separate set of models. e.g.:
User Profiles
Forum Posts
Blog posts
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Removing all empty elements from a hash / YAML?
... removing all empty elements (empty list items) from a nested Hash or YAML file?
20 Answers
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Where is Maven' settings.xml located on mac os?
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If you use brew to install maven, then the settings file should be in
/usr/local/Cellar/maven/<version>/libexec/conf
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What exactly is a Context in Java? [duplicate]
...ic void main(String[] args) throws IOException { // (1)
File file = new File("D:/text.txt");
String text = "";
BufferedReader reader = new BufferedReader(new FileReader(file));
String line;
while ((line = reader.readLine()) != null){ // (2)
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jquery how to empty input field
...To reset radio input:
$('#radio-input').attr('checked',false);
To reset file input:
$("#file-input").val(null);
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Difference between Groovy Binary and Source release?
...at the computer can read, then execute. No human can understand the binary file unless its been dissected, or opened with some program that let's you read the executable as code.
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Rendering a template variable as HTML
...r own filter and do some magic before returning the html.
With a templatag file looking like this:
from django import template
from django.utils.safestring import mark_safe
register = template.Library()
@register.filter
def do_something(title, content):
something = '<h1>%s</h1>&l...
SQL Server - Return value after INSERT
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INSERT INTO files (title) VALUES ('whatever');
SELECT * FROM files WHERE id = SCOPE_IDENTITY();
Is the safest bet since there is a known issue with OUTPUT Clause conflict on tables with triggers. Makes this quite unreliable as even if...
Warning message: In `…` : invalid factor level, NA generated
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If you are reading directly from CSV file then do like this.
myDataFrame <- read.csv("path/to/file.csv", header = TRUE, stringsAsFactors = FALSE)
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