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What is RSS and VSZ in Linux memory management
...g work? and in particular that the OS can allocate virtual memory via page tables / its internal memory book keeping (VSZ virtual memory) before it actually has a backing storage on RAM or disk (RSS resident memory).
Now to observe this in action, let's create a program that:
allocates more RAM t...
Placing Unicode character in CSS content value [duplicate]
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Here's another list of arrows: unicode-table.com/en/sets/arrows-symbols Use the "U+" code, but replace the "U+" with "\". e.g. "U+25C0" becomes content: "\25C0";
– Luke
Dec 5 '14 at 15:26
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How to highlight text using javascript
...xt");
let searchContainer = document.body; // document.getElementById("someTable");
let highlighter = new SearchTools.InstantSearch(searchContainer, [
{
token: "this is the text to highlight" // searchText.value,
className: "highlight", // this is the individual highlight class
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What’s the difference between ScalaTest and Scala Specs unit test frameworks?
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Mockito has been given a nice BDD support in specs: Mockito
specs has DataTables which allow to group a lot of small example in a sort of table (if you can stand operators being used as the table delimiters)
In specs, you can define examples which are nested as libidum and automatically cleaned-up ...
Why do I need 'b' to encode a string with Base64?
...4 variants may use characters other than + and /. See the Variants summary table at Wikipedia for an overview.
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How do function pointers in C work?
...eritance in C.
Let's say we want to make a subclass of String, say an ImmutableString. In order to make the string immutable, the set method will not be accessible, while maintaining access to get and length, and force the "constructor" to accept a char*:
typedef struct ImmutableString_Struct* Imm...
Use '=' or LIKE to compare strings in SQL?
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Woops... okay, I took the point. Table with ~600 entries, 10 digit number as comparing field: Equal is 20 to 30 times faster!
– guerda
Feb 5 '09 at 8:54
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Cannot issue data manipulation statements with executeQuery()
In MySQL I have two tables, tableA and tableB . I am trying to execute two queries:
10 Answers
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Learning assembly [closed]
... through memory if you start at the entry points from the interrupt vector table). For variable length you want to find an entry point based on a vector table or knowledge about how the processor boots and follow the code in execution order. You have to decode each instruction completely to know h...
9个常用iptables配置实例 - 更多技术 - 清泛网 - 专注C/C++及内核技术
9个常用iptables配置实例iptables命令可用于配置Linux的包过滤规则，常用于实现防火墙、NAT。咋一看iptables的配置很复杂，掌握规律后，其实用iptables完成指定任务...iptables命令可用于配置Linux的包过滤规则，常用于实现防火墙、NAT。...