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Is volatile expensive?
... looks something like:
# {method} 'run2' '()V' in 'Test2'
# [sp+0x10] (sp of caller)
0xb396ce80: mov %eax,-0x3000(%esp)
0xb396ce87: push %ebp
0xb396ce88: sub $0x8,%esp ;*synchronization entry
; - Test2::run2@-1 (line 33)
0xb396ce8e: mo...
What is the difference between a shim and a polyfill?
...
answered Jul 12 '11 at 20:56
Arsalan AhmedArsalan Ahmed
4,28244 gold badges1818 silver badges1313 bronze badges
...
How can I multiply and divide using only bit shifting and adding?
...want to decompose one of the numbers by powers of two, like so:
21 * 5 = 10101_2 * 101_2 (Initial step)
= 10101_2 * (1 * 2^2 + 0 * 2^1 + 1 * 2^0)
= 10101_2 * 2^2 + 10101_2 * 2^0
= 10101_2 << 2 + 10101_2 << 0 (Decomposed)
= 10101_2 * 4 + 10101...
How to choose the id generation strategy when using JPA and Hibernate
...the insert statement execution. This strategy is only supported on Oracle 10g drivers targeted for JDK 1.4. Comments on these insert statements are disabled due to a bug in the Oracle drivers.
If you are building a simple application with not much concurrent users, you can go for increment, identit...
嵌套块验证失败：未知的代码块类型: procedures_ifreturn，已拒绝添加 - AI...
...l": "<block type=\"procedures_defreturn\" x=\"20\" y=\"20\">\n <field name=\"NAME\">计算阶乘</field>\n <comment pinned=\"false\" h=\"80\" w=\"160\">计算一个非负整...
Making code internal but available for unit testing from other projects
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207
If you're using .NET, the InternalsVisibleTo assembly attribute allows you to create "friend" a...
“git rm --cached x” vs “git reset head -- x”?
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220
There are three places where a file, say, can be - the tree, the index and the working copy. Whe...
How can I expand and collapse a using javascript?
...e slide- if visible, slide up, if not slidedown.
$content.slideToggle(500, function () {
//execute this after slideToggle is done
//change text of header based on visibility of content div
$header.text(function () {
//change text based on condition
...
What is the string length of a GUID?
...)
Guid.NewGuid().ToString("X") => 68 characters (Hexadecimal)
outputs: {0x12345678,0x1234,0x1234,{0x12,0x34,0x12,0x34,0x56,0x78,0x9a,0xbc}}
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