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Get OS-level system information
I'm currently building a Java app that could end up being run on many different platforms, but primarily variants of Solaris, Linux and Windows.
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How to force a web browser NOT to cache images
...ile.jpg&some-random-number-262376" />
Script:
// PHP
if( isset( $_GET['img'] ) && is_file( IMG_PATH . $_GET['img'] ) ) {
// read contents
$f = open( IMG_PATH . $_GET['img'] );
$img = $f.read();
$f.close();
// no-cache headers - complete set
// these copied from [php.n...
How to disable text selection using jQuery?
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Always appreciate the CSS way to do things instead of using jQuery or JS in general. Just like jQuery animations vs CSS transitions, the way built into the browser is always going to be the best and most efficient.
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How to find/remove unused dependencies in Gradle
... dependencies.
Relocates dependencies to the 'correct' configuration.
To apply the rule, add:
gradleLint.rules += 'unused-dependency'
Details of Unused Dependency Rule is given in the last part.
To apply the Gradle lint plugin:
buildscript { repositories { jcenter() } }
plugins {
id 'nebula...
ORA-30926: unable to get a stable set of rows in the source tables
...ates in the query specified in USING clause. This probably means that TABLE_A is a parent table and the same ROWID is returned several times.
You could quickly solve the problem by using a DISTINCT in your query (in fact, if 'Y' is a constant value you don't even need to put it in the query).
Assu...
How to load a tsv file into a Pandas DataFrame?
...use pd.read_csv instead
The documentation lists a .from_csv function that appears to do what you want:
DataFrame.from_csv('c:/~/trainSetRel3.txt', sep='\t')
If you have a header, you can pass header=0.
DataFrame.from_csv('c:/~/trainSetRel3.txt', sep='\t', header=0)
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Why are dates calculated from January 1st, 1970?
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Astronomers use their own epochal date: http://en.wikipedia.org/wiki/Epoch_(astronomy)
Why? A date has to be chosen to make the math work out. Any random date will work.
A date far in the past avoids negative numbers for the general case.
Some of the smarter packages use the proleptic Gregoria...
What's wrong with nullable columns in composite primary keys?
...key creation. If this was just a retrieval problem, you could use where pk_1 = 'a' and pk_2 = 'b' with normal values, and switch to where pk_1 is null and pk_2 = 'b' when there are nulls.
– EoghanM
Mar 15 '13 at 9:59
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各编程语言读写文件汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术
各编程语言读写文件汇总all_programming_language_file_read_write_summary读写文件本来是非常基础的代码，但工作学习中难免会有遗忘，有时又难以翻看自己写过的代码，网上搜索更是五花八门让人头大，鉴于此，清泛网 读写文件本来是...
What's the difference between Spring Data's MongoTemplate and MongoRepository?
...ed Nov 12 '19 at 19:18
temporary_user_name
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answered Jun 9 '13 at 14:30
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