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Is there any way to git checkout previous branch?
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1282
From the release notes for 1.6.2
@{-1} is a way to refer to the last branch you were on. ...
Hide options in a select list using jQuery
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128
For what it's worth, the second form (with the @) doesn't exist in jQuery 1.3. The first isn'...
How to disable Crashlytics during development
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172
Marc from Crashlytics here. Here's a couple of ways to disable Crashlytics while you are doing...
Case preserving substitute in Vim
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121
Use abolish.vim:
:%S/badjob/goodjob/g
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HTTP error 403 in Python 3 Web Scraping
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213
This is probably because of mod_security or some similar server security feature which blocks k...
How to get a random value from dictionary in python
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14 Answers
14
Active
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Git 工具 - 子模块(submodule)：一个仓库包含另一个仓库 - 开源 & Github -...
...ninc/DbConnector
Cloning into 'DbConnector'...
remote: Counting objects: 11, done.
remote: Compressing objects: 100% (10/10), done.
remote: Total 11 (delta 0), reused 11 (delta 0)
Unpacking objects: 100% (11/11), done.
Checking connectivity... done.
默认情况下，子模块会将子...
How do you test to see if a double is equal to NaN?
... static Double.isNaN(double) method, or your Double's .isNaN() method.
// 1. static method
if (Double.isNaN(doubleValue)) {
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}
// 2. object's method
if (doubleObject.isNaN()) {
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}
Simply doing:
if (var == Double.NaN) {
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}
is not sufficient due to how the IEEE standard for ...
How do I get the current absolute URL in Ruby on Rails?
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Why does Java switch on contiguous ints appear to run faster with added cases?
...ogram logic. Part of this code involves multiplying double variables by 10 raised to arbitrary non-negative int exponent s. One fast way (edit: but not the fastest possible, see Update 2 below) to get the multiplied value is to switch on the exponent :
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